HOME

German/DDR Slide Rules
(Manufacturers and Countries not found in their own gallery)

KEEP ISRM FREE!
Donations are
tax deductable

This gallery is dedicated to slide rules and manufacturers located within Germany, including pre-Berlin Wall, DDR Eastern Germany. The DDR slide rules, RS, Reiss, Meissner KG, Veb Mantissa came from the region of Dresden and Bad Liebenswerda and were manufactured from 1882 through 1984. Note: Belgium has three official languages and is in the France gallery, even though Dutch and German is spoken more often than French. Switzerland has four official languages one of which is German, but has been placed in its own gallery.

Manufacturers in this gallery:
ALKU (ALfred HUhmann)
Controller Calculator KG
Ecobra
Fedra
Friedmann
H-H Universum
IWA
Karl-Wess
Joe Klawun
Koch, Huxhold and Hanneman
Meissner
Norma
Reiss
REWA
Rista
Schacht & Westerich
Seehas
Staedtler
Standardgraph
Veb EAW
Veb Mantissa
Wichmann

ALKU Rechenschieberfabrik, ALfred KUhmann


REF ALKU Rechenschieber

ALKU Rechenschieber
Made in Neueibau, East Germany, Designed by Alfred Kuhmann, c1945
Front Scale: A [ B, R(CI), C ] D
Back - Blank
Note the 7" long main substrate, stator and slides are made of glass with the scales made of paper laminate.
Archive - Scan Donated by Nathan Zeldes, Israel.
Instructions, 2 pgs (200Kb PDF)


ALKU Rechenschieberifabrik Neugersdorf 7/387/4001 Rietz

ISRM 22.03.25.01

ALKU Rechenschieberifabrik Neugersdorf 7/387/4001 Rietz
Made in Germany - 25cm RR Track Scales
Front Scale: 25cm // K, A [ D, CI, B ] C, L || 27.5
Back Scale: S (cos), Tan (Cot)
Original owner: Dr. A. Lorenz (written on sleeve with notes.)
Gift Of Nancy Ulrich. Husband Ted Ulrich's Collection.

Controller Calculator Schnelirechner KG
CONTROLLER - Rechen-Scheiben



REF Controller Circular Slide Rule 75mm Diameter

Controller Circular Slide Rule 75mm Diameter
Made in Munich, West Germany, bu Controller Calculator KG, DGRM, c1959
Front Scale: C ( D, A, K)
Back - Conversions
Archive - Scan Donated by Rod Lovett Collection.
Instructions, 1965-1966 (German) (4.82MB PDF)


Controller Circular Slide Rule 75mm Diameter 1970

ISRM 13.03.15.02
Controller Circular Slide Rule 75mm Diameter 1970
Made in Munich, West Germany, bu Controller Calculator KG, DGRM, 1970
Front Scale: C ( D, A, K)
Back - Conversions
Warranty Number: 705/3433R
Instructions, 1970 (German) (6.2MB PDF)


REF Controller 110R Circular Slide Rule 110mm Diameter

Controller 110R Circular Slide Rule 110mm Diameter
Made in Munich, West Germany, bu Controller Calculator KG, DGRM, c1961
Front Scale: C ( D, A, K)
Back - Conversions
Archive - Scan Donated by Giovanna Breda Collection.


REF Controller 110R Circular Slide Rule Version 2 110mm Diameter

Controller 110R Circular Slide Rule Version 2 110mm Diameter
Made in Munich, West Germany, by Controller Calculator KG, DGRM, c1961
Front Scale: C ( D, A, K)
Back - Conversions
Archive - Scan Donated by Giovanna Breda Collection.


Controller 110R Circular Slide Rule Version 3 110mm Diameter

ISRM 13.03.15.03
Controller 110R Circular Slide Rule Version 3 110mm Diameter
Made in Munich, West Germany, by Controller Calculator KG, DGRM, 1970
Front Scale: C ( D, A, K)
Back - Conversions
Warranty Number: 705/5433Y
Instructions, 1970 (German) (6.2MB PDF)


REF Controller 200R Circular Slide Rule 220mm Diameter

Controller 200R Circular Slide Rule 220mm Diameter
Made in Munich, West Germany, by Controller Calculator KG, DGRM, c1961
Front Scale: C ( D, A, K)
Back - Conversions
Archive - Hermann's Slide Rule Catalogue.

Bayerische Reisszeugfabrik

ECOBRA or Ecobra was a brand name of Bayerische Reisszeugfabrik, a Nuremberg maker of drawing instruments that was purchased by Joseph Dietzgen in 1909. The company began producing slide rules before World War II, and after the war, Eugene Dietzgen Company of Chicago distributed ECOBRA rules in the United States. Metal rules were more popular in the United States than they were in Europe. Reference: Dieter von Jezierski, Slide Rules: A Journey Through Three Centuries trans. Rodger Shepherd (Mendham, N.J.: Astragal Press, 2000), 34-35, 52-53.


Ecobra 1260 All-Aluminum Lot312
ISRM 20.04.01.381
Ecobra 1260 All-Aluminum Lot312
Made in Germany - c1940 - all aluminum
Front Scale (extended scales - no labels)
14cm // A [ B, C ] D
Back scale: [ S, L, T ]
Gift Of Philip Stanley, Worchester, Massachusettes


Ecobra 1270

REF P106
Ecobra 1270 Pocket - Closed simplex
Made in Germany - c1940 - all aluminum
Front Scale (unmarked): 14cm // A [ B, C ] D
Back Adv: Aluminum Company of Canada


Ecobra Rietz R141

REF
Ecobra Rietz R141
Made in Germany - c1960 - Plastic
Front Scale: 13cm // A [ B, CI, C ] D, K
Archive - W. Girbardt (Univ Greifswald, Germany) Collection


Ecobra Darmstadt R143

REF P257
Ecobra Rietz R141
Made in Germany - c1960 - Plastic
Front Scale: 13cm // LL2, LL3, A [ B, CI, C ] D, K, LL1
Back Scale: P, T Cot, L, S Cos
Back Adv: INA-Nadellager



Ecobra 154 Cosmos

REF
Ecobra 154 Cosmos
Made in Germany - Plastic - Identical to Hope 530
Front Scale (extended)
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, Ll2, LL1
Back Scale: T Cot, ST ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Archive - Rod Lovette Collection


Ecobra 1460

REF
Ecobra 1460
Made in Germany - c1950
Front Scale (extended Scales): 14cm // K, A [ B, R, C ] D, Lg
Cursor: Multiple hairlines
Archive - Scan provided by Cassou Olivier (France) Collection


Ecobra 1461 System Rietz Lot 47
ISRM 22.07.06.69
Ecobra 1461 System Rietz Lot 47
Made in Germany/La Porte - c1950 for Garcia Commercial in Puerto Rico.

Flat lens, Painted aluminum (Peeling off). Metal cursor bars (Similar to early Picketts)
Front Scale: K, A [ B, R, C ] D, lg
Back Scale: 5in [ sin, tg ]
Sleeve promo: Garcia Commercial. Inc. Meteriales de Constructión. San Juan - Davamón, Puerto Rico.
Gift Of Cindy Tate, Bozeman, Montana. Victor B. Tate collection.


Ecobra 1461 System Rietz Lot 40
ISRM 20.04.01.368
Ecobra 1461 System Rietz Lot 40
Made in Germany - c1950 - Painted aluminum
Front Scale: K, A [ B, R, C ] D, lg
Back Scale: 5in [ sin, tg ]
Original owner: Don Hodge (on box)
Sleeve promo: RefractariosMadison-Walker - FLIR
Gift Of Philip Stanley, Worchester, Massachusettes.



Ecobra 1500

REF
Ecobra 1500
Made in Germany - c1940 - all aluminum
Front Scale: 25cm // K, A [ B, CI, C ] D, L
Archive - W. Girbardt (Univ Greifswald, Germany)Collection


Ecobra 1611 Darmstadt Special

ISRM 09.01.12.106
Ecobra 1611 Darmstadt Special
Made in Germany - Painted Aluminum
Front Scale (extended)
T Cot, S Cos, DF [ CF, CI, C ] D, P
Back Scale: K, A [ B, Lg, C ] LL3, LL2, LL1
Donated by David Hecht, Alexandria, VA


Ecobra 1711 Cosmos

REF
Ecobra 1711 Cosmos
Made in Germany - Aluminum
Front Scale (extended)
LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, Ll2, 
Back Scale: LL01, K, A [ B, T<45 Cot, T>45 Cot, ST, S Cos ] D, P, S , LL1
Archive - Rod Lovette Collection

Fedra



Fedra Log Log

ISRM 06.08.04.01
Fedra Log Log - Closed duplex - DC Aug1968
Made in East Germany possibly by Veb Mantissa
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: 27cm, S, ST, T, LL1, LL2, LL3, 10.75Inch
Back Slide: [Greek Alphabet]
Same as Staedtler Mars 544-52 Log Log
Donated by Seth Balish

Note: This model is available in the Slide Rule Loaner Program supplied through the generosity of Skip Zogopoulos, Exeter, NH who has donated over 200 of these slide rules to ISRM as well as many other items to support the activities of the museum.

Friedmann, Germany

Little is known about this brand. There was a Friedman Bros of New York, which made (or distributed) Drafting tools (ca1935), marked "Freidman Germany" but it is not confirmed if this is the same family, The slide rule and cursor design is similar to Faber-Castell who rebranded slide rules. According to J¨ergen Nestler in Germany, Friedmann was a representitive and distributor for Faber-Castell.


Friedmann 4in Pocket Mannheim

P182
Friedmann 4in Pocket Mannheim
Made in Germany
Front Scale: A [ B, CI, C ] D, K
Back Scale: [ S, L, T ]

Friedmann Mannheim

ISRM 18.09.28.01
Friedmann Mannheim
Made in Germany, c1930 (Possibly by Nestler or Faber Castell)
Note: Railroad Track style scales, Riveted Laminations
Front Scale[Extended]
11inch // A [ B, CI, C ] D || 11inch
Back Scale: [ S, L, T ]
Original Owner: (marked on back of stock), R.J. Eastwick

Höhler - Hohen Neuendorf Company

H-H was founded by A.A. Höhler (the first "H") in 1945 as Präzisionswerk Hohen Neuendorf A.A. Höhler, Hohen Neuendorf bei Berlin, Annemariestraße 27. Hohen Neuendorf (the second "H") is a town in the Oberhavel district, in Brandenburg, Germany. It is located north west of Berlin. The "Chronicle of the Municipality of Hohen Neuendorf from the Beginnings to 1995" has a record stating the A.A. Höhler produced slide rules with two workers. Prior to 1945 the records also show other workshops, potential forerunners of H-H, as Schlecht & Roth, Mechanical Workshop, Oranienburger Str. 74; Ewald Schlecht 1944, parts for slide rules, jigs and lighters; and Ewald Schlecht 1945, 3000 slide rules produced, 3 employees. Höhler may have worked for, or ended up taking over these other enterprises. Product ceased by the end of the 1950s.Only the Rietz design seems to exist. See expanded H-H Universum history by George Schriber (translated from German by Andreas Faßbender).


H-H Universum System Rietz

REF P255
H-H Universum System Rietz
Made in Germany - 1935-1942
Front Scale - Extended
22cm // A [ B, CI, C ] D, L \\ 22cm
Back Scale: [ S, T ]
Multilined Cursor
Back: Conversions (German)


H-H Universum System Rietz

ISRM 22.03.01.13
H-H Universum System Rietz
Made in Germany - 1935-1942
Front Scale - Extended
30cm // K, A [ B, CI, C ] D, L \\ 1.25 x 100
Back Scale: [ S, T ]
Multilined Cursor
Back: Conversions (German - faded)
Instructions (German)Courtesy of Mike Syphers

IWA - Ingenieurerbüro für Wirtschafliches Arbeiten

IWA RECHENSHIEBERFABRIK, F.Riehle KG, 73 Esslingen a.N. - Kuferstr. 13, West Germany, is most famous for its slide charts and circular calculators. These in this gallery more resemble generic slide rules with log scales. From the beginning IWA was specialized in the development and design of data slide as well as their manufacturing. Approximately 10% were designed by their customers. The reamaining 90% were developed as exclusive IWA mdels or designed against the technicall specifications of the customers.
IWA Company and Manufacturing Prosseses Information (English and German)
From 1924-1962 the scales on cardboard data slides were designed manually with ink on paper. Typographic printing was used. Texts and numbers were manually composed with lead letters, and then pressed into a zinch cliche. After 1962, all cardboard data slides were offset printed. From 1924-1930 the plastic slides were lithograph printed. From 1930-1960 lithograph printing was used.In 1960 screenprint in combination with offset was used and the surface of the plastic reinforced by varnishing and/or laminating.


IWA 0257 PIA-Electronic

ISRM 21,08,19.01
IWA 0257 PIA-Electronic
Made in Germany for Dutch firm De Muiderkring N.V.- c1963
Front Scale: 14cm, A [ B, Cap pF, Inductance µH, C] D, Frequency 10kHz to 500 MHz, Wavelength feet, meters, 5.5in
Back Scale:
U2/U1, db, X [ sin, lg, tg ] Resistor Color Code
Multilined Cursor: p, pk, q, p, pk


IWA 0272 Electronic

REF
IWA 0272 Electronic
Made in Germany for Dutch firm De Muiderkring N.V.- c1963
Front Scale - Extended
Lambda, Omega, f [ C, L, RC ] L/C, RL
Back Scale:
K, Sin Cos, A [ B, CI, C ] D, Ln, 25cm
Multilined Cursor
Archive - scan by Tom Cattrall
IWA-0272 Muiderkring electronic
Instructions for the MK slide rule. (English)
Manual Scan provided By David Walker, UK


REF IWA 01206 Machining - Roughness Slide Rule for Turning
IWA 01206 Machining - Roughness Slide Rule for Turning
Made in Germany - c1971
Front Scale - Extended
26 cm // r (4 scales), feed [ V in m.min ] Ra, Rt \\ 10.2 inches
Back: Direction in English and German
Archive - scan by Jim Cerney


IWA 1633 System Wern
IWA 1633 System Wern - Decimal Point Slide Rule Calculator
Designed in Sweden and Made in Germany by IWA - 1966
Designed in Sweden and Made in Germany - 1966
21 cm square. Scale labels are on the runner (cursor).

Archive - Images downloaded from wern-inter.net
Instruction Manual (1.6 MB PDF)

IWA 1638 System Wern ABC (1966)
ISRM 20.08.31.01


Carl R. Wern created the slide rule design layout together with his two younger brothers George H. Wern and Lars A. Wern in Sweden year 1966. It was a new approach to simplify slide rule computing work for all categories including decimalpoint location.
IWA 1638 System Wern ABC - Decimal Point Slide Rule Calculator
Designed in Sweden and Made in Germany - 1966
21 cm square. Scale labels are on the runner (cursor).
Gift of Carl R. Wern, George H. Wern and Lars A. Wern of Sweden.
wern-inter.net

Instruction Manual (2 MB PDF)


Karl-Wess



Karl Wess

REF P125
Karl Wess - Closed simplex
Made in Germany(?Aristo)
Front Scale: 13cm // A [ B, CI, C ] D, K || 5inch
Back Slider: [ S, L, T ]

Joe Franz Klawun
Feinmessinstitut (FeinmeBinstitut) Klawun, Berlin - Charlottenburg 5



Klawun (Nestler) System Klawun (20inch/50cm) Commerz

ISRM 21.05.22.01

Sleeve Logos

Klawun (Nestler) System Klawun (20inch/50cm) Commerz
Front Scale: 55cm // KZ [ T, VAT p%, E T ] V Z
Back Scale: [ sh/d, %pound;]
Cursor Hairlines" Q, KW, PS, d
Note: Railroad track style scales scales


Feinmessinstitut Joe Klawun No.11 Mannheim (Nestler No.2)

ISRM 13.09.16.03
Feinmessinstitut Joe Klawun No.11 Mannheim(Nestler No.2)
Made in Germany by Albert Nestler for Feinmessinstitut Joe Klawun, Berlin-Charlottenburg 5
Note: Nestler model 2
Front Scale: A [ B, C ] D
Back Slide: [ S, Lg, T ]
Cursor: Missing, see Nestle No. 9 for proper cursor.
Back: Blank


Feinmessinstitut Joe Klawun No.25 Sys.Rietz (Dec 1938)

ISRM 13.09.16.03
Feinmessinstitut Joe Klawun No.25 Sys.Rietz dc38-12
Made in Germany by Faber-Castell for Feinmessinstitut Joe Klawun, Berlin
Note: Faber model No 1/94/394. "Railroad track" style divisions
Front Scale (extended) scales labeled
27cm // K, A [ B, CI, C ] D, L || 10inch
Back Slide: [ S Cos, ST, T Ctg ]
Cursor: Metal framed
Back: Conversions (German)
Original Owner: Spordeler (on back of stock)


REF Feinmessinstitut Klawun No.31C
Feinmessinstitut Klawun No.31C
Made in Germany by Faber-Castell
Front Scale (extended)
14cm // K, A [ B, CI, C ] D, L
Back Scale: S, ST, T
archive - Andreas Tabak Collection, The Netherlands


Castell Klawan No.81 (1957)
ISRM 20.04.10.183
Castell Klawan No.81 (Aug 1957)
Made in Germany by Faber Castell for A. Klawan, Hanover.
Front Scale(extended)
14cm(fine divisions). Lg // K, A [ B, CI, C ] D, P, \\ Sin Cos,tg Cot
Back slider: [ LL1, LL2, LL3 ] Multiple hairlines
Back: Spintex Prazisions-Erzeugnisse promo.
Gifted by the Philip Stanley Collection


REF Feinmessinstitut Klawun Rietz No.100
Feinmessinstitut Klawun Rietz No.100
Made in Germany by Faber-Castell
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L
Back Scale: Sin, Sin/Tg, Tg
archive - Andreas Tabak Collection, The Netherlands


REF Feinmessinstitut Klawun Rietz No.100 Hanover
Feinmessinstitut Klawun Rietz No.100 Hanover
Made in Germany by Faber-Castell
Front Scale (extended)
27cm // K, A [ B, CI, C ] D, L
Back Scale: Unknown, but assumed to be S, SRT, T
archive - Andreas Tabak Collection, The Netherlands


REF Feinmessinstitut Klawun No.125 LL Hanover
Feinmessinstitut Klawun No.125 LL Hanover
Made in Germany by Faber-Castell
Front Scale (extended)
27cm // K, A [ B, L, CI, C ] S, ST, T1, T2
Back Scale: LL2, S', LL1
Multi-lined Cursor
archive - Andreas Tabak Collection, The Netherlands


P258 Joe Klawun No. 666/T
Joe Klawun No. 666/T - Closed simplex
Made in Germany (identical to Nestler 11-ZM) Feinmessinstitut Klawun
Front Scale (extended)
13cm // A [ B, C ] D
Back: Blank


Feinmessinstitut Klawun Aristo 0908 TriLog (1973)

ISRM 12.06.02.01
Feinmessinstitut Klawun Aristo 0908 TriLog (dc3LR37)
Made in Germany by D&P for Klawun Feinmessinstitut Hanover
Front Scale: T1. T2, A [ B, BI, CI, C ] D, P, S , ST
Back Scale: LL1, LL2, LL3, DF [ CF, CIF, CI, C ] D, L, K
Multiple hairlines: PS, KW
Donated by Ted Hume, Texas


Joe Klawun No1001/S - System Klawun (Business Rule)
Der Rechenstab des Kaufmanns - System Klawun

ISRM 11.12.15.03
Joe Klawun No1001/S - System Klawun (Business Rule)
Made in Germany by Albert Nestler for Feinmessinstitut Klawun
Front Scale (extended)
27cm // DF (KZ) [ CF (T), (CI) Val. (p%), (C) E (T) ] (D) V (Z) || 10 inch
Back Slide Scale: [ sh/d (-sh/d), £ (lg)]
Back : Instructions (German)
Note 1: Z = Zins (interest): K = Kapital (principal); p = Zinsfuss (interest rate); T = Tage (days).
Note 2: The DF/CF scales are folded at 3.6.
Note 3: At right end of back is a slogan: "Alles was Rechnen erleichtert liefert Klawun" Translated to English: "Klawun delivers everything that makes calculation easier."

Koch, Huxhold and Hanneman Hamburg, Germany

The timeline in terms of the company name and its change and change back is a bit more difficult. KHH was founded on December 16, 1909 by William Albert Klaus Diederich Koch, John Carl Rudolf Huxhold, and Carl Fritz Emil Hannemann. Some texts say they were former employees of Dennert & Pape. William Koch died in mid 1930 and shares in the company went to his son Wilhelm Arnold Chrisitan Koch, but he did not stay with the firm past 1943. The firm applied to register "Huxhold & Hannemann, Hansestadt Hamburg" as the new name, but the factory was totally destroyed in the war before it was used on any products. The factory ws set on fire and completely obliterated during an air raid on Hamburg by the Royal Air Force on July 21, 1942. John Huxhold died at the age of 66 just before the air raid and so was saved from having to see his factory bombed. The official end of KHH is documented with the deletion from the commercial register on August 30, 1944

George Schreiber writes in his book that suspects that not only was the name change entered late in the commercial register, but that the familiar old company name will also continue to be used on the slide rules for the time being. Slide rules which bears the name KHH are rare, those with "Huxhold & Hannemann Hamburg" even rarer.Taken from the book of George Schreiber:.
Expanded history at Recenschieber.org Who Were Koch, Huxhold & Hannemann? These are know firms that rebranded or sold KHH slide rules: Gebr. Wichmann; Schacht & Westerich, Hamburg; R. Reiss, Bad Liebenwerda; Alfred Martz, Stuttgart; Marabu, Stuttgart; Johann Faber AG, Nürnberg; Rudolf Neumann, Leipzig; Walter Pfeffer Nachf., Halle - Saale; Ernst Sokopf, Bremen; Gustav Löhr, Lemgo; Friedrich Korte, Braunschweig; MAHO, Pfronten; Plenio Reisszeuge; Emil Pfenninger & Co, Zürich; Ahrend, Niederlande; A. Lietz, San Francisco; Frederick Post Co, Chicago; M.D.S., London Hughes Owens Company, Canada; Kahn Fréres, Brüssel; VainÖ Korpinen Oy, Helsinki; Ohico Holdings BV, Niederlande; Otto Schleiffelder, Wien; Freidmann, USA.



Frederick Post 1452 - US Patent 1/81722 (c1924)

REF S443
Frederick Post 1452 - Closed Simplex
Made in Germany by Koch, Huxhold & Hanneman - US Patent 1/81722
Note 5-slot stock with adjustmnent screws on edge
Front Scale: 10 // A [ B, CI, C ] D, K || 26cm
Back Scale: [ S, L, T ]
Back: Table of Constants 
1924 1925-32
Examples of KHH/Frederick Post cursors. Courtesy of Mike Sypher collection

Meissner KG



Meissner KG Darmstadt
ISRM 20.04.01.367
Meissner KG Darmstadt
Made in DDR/Germany - Same factory as Veb Mantissa
Front Scale: 13cm // K, A, DF [ CF, CIF, CI, C ] D, P, S, T
Back Slider: [ LL1, LL2, LL3, L ]
Cursor: multiple hairlines
Gift Of Philip Stanley Collection


Meissner KG Multi Pocket

ISRM 20.04.01.399
Meissner KG Multi Pocket (1974)
Made in DDR/Germany - Same factory as Veb Mantissa
Front Scale: 13cm // ST, A, DF [ CF, CIF, CI, C ] D, P, S, T
Back Slider: [ LL1, LL2, LL3, L ]
Cursor: multiple hairlines
Gift Of Philip Stanley Collection


REF Meissner KG Mono Rietz 731-541
Meissner KG Mono Rietz 731-541
Made in DDR/Germany - Same factory as Veb Mantissa
Front Scale: L, K, A[ B, CI, C ] D, S, T, ST
Back Slider (unverified): [ LL1, LL2, LL3, L ]
Archive - Courtesy of www.oldjurnal.narod.ru

Norma Rechenscheibe



Norma Grafia 190

REF
Norma Grafia 190
Made in Germany DBRG
Front Scale: C ( D )
Guage marks for the Graphics/Typography Industry
Back: Blank
Archive - Scan by Hubert van Dongen Collection


Norma Mercuria 190

REF
Norma Mercuria 190
Made in Germany DBRG
Front Scale: C ( D, DI, %, %, constants )
Guage marks for the Graphics/Typography Industry
Back: Blank
Archive - Scan by Rod Lovette Collection


Norma Rieger 190

REF
Norma Rieger 190
Made in Germany DBRG
Front Scale: C ( D )
Guage marks for the Graphics/Typography Industry
Back: Blank
Archive - Scan by Rod Lovette Collection

Reiss

Bad Liebenwerda, (East)Germany


Reiss Pocket Simplex

REF P002
Reiss Simplex
Made in Germany - brushed aluminum
Front Scale: 13 CM // A [ B, C ] D
Back Scale
[ Sin, Log, Tg ]


Reiss Darmstadt DDR

ISRM 04.07.03.01-D7
Reiss Darmstadt DDR
Made in East Germany - Brushed Aluminum
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: Cos, Sin/Tg [ LL1, LL2, ll3 ] sin, tg
Cursor: 4 hairlines


Reiss 3201 Rietz-Spezial

ISRM 09.02.28.01
Reiss 3201 Rietz-Spezial
Made in Germany - brushed aluminum
Front Scale
L, DF [ CF, CIF, C ] D, DI
Back Scale (extended)
ST, T [ K, B, C ] S, P


Reiss 60/0015 Rietz

ISRM 13.01.08.02
Reiss 60/0015 Rietz - dc 749
Made in Germany - brushed aluminum. Has "2" on one end of stock and slide for matching parts.
Front Scale (extended): 28cm / K, A [ B, CI, C ] D, L
Back Scale (has rear hairline): [ Sin, Sin/tg, tg ]
Note: This specimen is missing its cursor. See below.
This slide rule was owned by Susanne Petersson's brother, Andeas, who recalls that his grandmother, gave this to him along with a set of drafting tools. Another donation of a Metric Converter slide rule is in the Sterling gallery
In Family photo on left: Grandmother, Susanne, sister Sylvia, brother Andreas


Reiss Rietz

REF S038
Reiss Rietz
Made in East Germany - Brushed Aluminum
Front Scale: K, A [ B, CI, C ] D, L
Back Slider
[ Sin, Arc, Tan ]
Cursor: 4 hairlines - PS, KW


Reiss 3209 Pocket Simplex

REF
Reiss 3209 Simplex (1972)
Made in Germany - brushed aluminum. Metal framed cursor
Front Scale (extended)
13 CM // K, A [ B, CI, C ] D, L
Back Scale (not verified):[ Sin, Tg ]
Archive - Gerhard Wenzel collection


Reiss 3209 Pocket Simplex
REF
Reiss 3209 Simplex (1975)
Made in Germany - brushed aluminum, molded plastic cursor
Front Scale (extended)
13 CM // K, A [ B, CI, C ] D, L
Back Scale:[ Sin, Tg ]
Archive - Keith Beckman collection


Reiss 3212 Pocket
ISRM 18.04.06.142
Reiss 3212 Pocket
Made in Germany - Plastic
Front Scale (extended scales)
13cm // K, A [ B, CI, C ] D, L
Back Scale: [ sin, tg ]
Cursor: 3 hairlines
Gift Of Leroy Hausler Collection


Reiss 3214 Darmstadt-Record

ISRM 18.04.06.33
Reiss 3214 Darmstadt-Record
Made in Germany - Plastic
Front Scale (extended scales)
L, K, A [ B, CI, C ] D, LL1, LL2, LL3
Back Scale: P, S, ST, DF [ CF, CIF, CI, C ] D, T1, T2, DI
Cursor: 3 hairlines
Original owner: Sckerr Peter Schwerin
Gift Of Leroy Hausler Collection


Reiss 3223 Progress

REF
Reiss 3223 Progress
Made in East Germany DDR - Brushed Aluminum
Front Scale: A, DF [ CF, CI, C ] D, L
Back Scale: T1, T2 [ LL1, LL2, ll3 ] D, S, Cos
Cursor: All plastic cursor. Very unique design.
Archive - Scan by Steve Seale Collection


Reiss 3227 (Log Log Vector) Duplex

REF
Reiss 3227 (Log Log Vector) Duplex
Made in Germany - Plastic
Front Scale (extended scales)
K, T1, T2, DI, A [ Sh1, Sh2, Sz, C ] D, Sk, P, ST, L
Back Scale: LL00, LL01, LL02, LL03, DF [ CF, CIF, BI, CI, C ] D, LL3, LL2, LL1, LL0
Cursor: 3 hairlines
Archive - Scan by Steve Seale Collection


S198 Reiss 3236 Darmstadt
Reiss 3236 Darmstadt - Duplex
Made in Germany - Plastic
Front Scale (extended scales)
K, A [ B, CI, C ] D, L
Back Scale: P, S [ LL1, LL2, ll3 ] T1, T2
Cursor: 3 hairlines


Reiss Rietz Pocket

ISRM 09.01.12.107
Reiss Rietz Pocket
Made in Germany - Plastic
Front Scale: 13cm // K, A [ B, CI, C ] D, L
Back Scale: [ S, T]
Cursor: 3 hairlines
Donated by David Hecht, Alexandria, VA


Reiss DDR Pocket Darmstadt Pocket

ISRM 22.03.01.106

Replace 09.01.12.108
Reiss DDR Pocket Darmstadt Pocket
Made in East Germany - Plastic
Front Scale: 15cm // K, A DF [ CF, CIF, CI, C ] D, P, S, T
Back Scale: [ LL1, LL2, LL3, L]
Cursor: 4 hairlines
Gift Of Philip E. Stanley

REWA



REWA 10M Rechenwalze Cylindrical Slide Rule (c.1910)

REF
REWA 10M Rechenwalze Cylindrical Slide Rule
Made in Germany
Cylindrical C & D scales in 50 sections
Note: Similar to Daemen-Schmid 10 m Rechenwalze, but some details are different. May be a copy. Right end of cylinder marked: "A.H. Nitschke. Straupitz-Hirschberg in Schl." Only example known. Smaller 3-m REWA sold at Breker auction in 2007. The REWA brand is unknown to Heinz Joss, the Swiss specialist on cylindrical slide rules. REWA may be an abbreviation for REchenWAlze.
Archive - Ed Chamberlain Collection.

E. O. Richter

E. O. Richter (c1841-1907) founded the firm in Chemnitz, Saxony, after training as a clockmaker. In 1892 he patented his 'flat system', copied by many other makers after his patent ran out in 1905. Firm became a VEB Kombinat (i.e. a state owned company) in 1945. Richter instruments continued to be made in the DDR until the 1980s at least. (text by David Riches, UK)


Richter Rietz 11

SRC32841
Richter Rietz 11
Made in Denmark by UTO for E.O.Richter
Front Scale: 13cm // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T
Archive - Scan from Hermann's Slide Rule Catalog


Richter Electro 22

SRC32841
Richter Electro 22
Made in Denmark by UTO for E.O.Richter
Front Scale: 13cm // Dyn/Mot, Volt, A(KW) [ B, CI, C ] D, &# 966;, &# 966;, L
Back Scale: [ S, S&T, T
Archive - Scan from Hermann's Slide Rule Catalog


Richter Rietz 1

REF
Richter Rietz 1
Made in Denmark by UTO for E.O.Richter
Front Scale: 27cm // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Archive - Scan By Giovanni Breda Collection


Richter Darmstadt 3

REF
Richter Darmstadt 3
Made in Denmark by UTO for E.O.Richter
Front Scale: 27cm // L, K, A [ B, CI, C ] D, P, T, Cot, S, Cos
Back Scale: [ LL1, LL2, LL3 ]
Archive - Scan By Giovanni Breda Collection

Rista



S259 Rista Rietz 1
Rista Rietz 1
Made in  Germany - Plastic
Front Scale: K, A [ B, CI, C ] D, L
Back Slider
[ S, S&T, T ]
Cursor: 4 hairlines


Schacht & Westerich, Hamburg, Germany

In 1826 Heinrich Wilhelm Conrad Schacht received a lottery ticket from his boss, which gave him a considerable cash gain. He was able to open his first paper shop at the age of 24: "Conrad Schacht". In only nine years, Schacht succeeded in establishing a successful business and building its own paper manufacturing. In 1835, Schacht died after a short illness and Conrad Schacht's widow quickly decided to hand over the business to a friend of the family, Adolph Westerich and on 1 July 1835 took over the management. In 1842, a large fire destroyed many Hamburg buildings, including the paper treatment Schacht. Three years later, in May 1845, Westerich again opened the doors of the action, but with a new address and from 1846 also under a new name: "Schacht & Westerich". When Adolph Westerich retired in 1870, he left his nephew Eduard a solid and popular Hamburg company. It was only in 1995 that Manfred Westerich, the last managing director of the Westerich family, left the company.


Schacht & Westerich System Cuntz Slide Rule

Schacht & Westerich System Cuntz (Complex Number) Slide Rule
Made in Germany by Schacht & Westerich of Hamburg
Front Scale: L, 0.1t, 0.1s, 0.01st, d²π/4, nπ, ∛(H1HT2), ∛(Z1ZT2), ∛(E1T2M3), d√(Z1T2HT3), d√(E1H2ZT3) [ Q+1 ] n23, 1:n
Back: 15 cm., 6 in.
Slide Back: blank
Note: In 1916, Cuntz patented the ST, S and T scales, all refering to D. This is today's standard. He also developed 1-unit 20 inch Square Root and 30-inch Cube Root scales, both refering to D. (used on today's Pickett DUAL-BASE Rules).
Scans provided Powerhouse Museum, Sydney, Australia and the Steve Searle Collection, Tennessee
This slide rule has extra scales which can be used for many different forms of calculations. It was designed and patented (in 1916) by one Gregor Rudolf Ferdinand Heinrich Cuntz of Hamburg, Germany. The primary intention of this slide rule arrangement seems to be to keep the orders of magnitude of numbers, ie, the position of the decimal point, as easily ascertainable as possible. The arrangement also allows for all the various roots, circular and trigonometric numbers to be available in one view along the cursor hairline. Refs: [G.R.F.H. Cuntz, US Patent document No. 1168059]. Dieter von Jezierski "System Cuntz, an outstanding slide rule and its story" Slide Rule Gazette, Issue 4, Autumn 2003, p.85.


Schacht & Westerich System Cuntz Slide Rule

Schacht & Westerich System Cuntz (Complex Number) Slide Rule
Made in Germany by Schacht & Westerich of Hamburg
Front Scale: L, 0.1t, 0.1s, 0.01st, d²π/4, nπ, ∛(H1HT2), ∛(Z1ZT2), ∛(E1T2M3), d√(Z1T2HT3), d√(E1H2ZT3) [ Q+1 ] n23, 1:n
Back: 15 cm., 6 in.
Slide Back: blank
Note: In 1916, Cuntz patented the ST, S and T scales, all refering to D. This is today's standard. He also developed 1-unit 20 inch Square Root and 30-inch Cube Root scales, both refering to D. (used on today's Pickett DUAL-BASE Rules).
Scans provided the Steve Searle Collection, Tennessee

Seehase, Dr. Ing.

Design based on German patent DE727007, 4 September 1939 by Dr. Ing. Hans Seehase.

Dr. Ing. Seehase Pocket
ISRM 18.07.11.10
Dr. Ing. Seehase Pocket - Complimetary Advertising - c1950
Made in Germany
Note: Made from stiff cardboard and plastic film. If you pull the slide out all the way the top and bottom scales fall out, too.
Front Scale: A [ B, C ] D
Back Advertisement: The Leece-Nevill Company, Cleveland. A manufacturer of Automotive Voltage Regulators (1909-1969)
Gifted by Phil Stanley of Worcster, Massachussettes
Philip Stanley retired from engineering to become a full-time dealer in and appraiser of antique scientific instruments and tools as The Analytical Engine. He has written two books on antique measuring instruments, and numerous articles on instruments and technology, and has given several talks on these subjects. Phil appeared on the Antiques Road Show on PBS, as an appraiser, in 2012, 2013, 2014.


REF Dr. Ing. Seehase Pocket
Dr. Ing. Seehase Pocket - Advertising - c1950
Made in Germany
Front Scale: A [ B, C ] D
Back Scale: 5inch [] 13cm Back: Automotive Products Company, London.
Archive - Herman's Slide Rule Catalogue


REF Dr. Ing. Seehase - Elektro Praktikus
Dr. Ing. Seehase - Elektro Praktikus - c1950
Made in Germany - Alternating Current (power) Calculator
Front Scale: m [ A, V ][ qmm ] Cos (phase)
Back Scale:
qm [ Lx, Lp ][ Watt ] n (eta)
Note: two slides
Archive - Herman's Slide Rule Catalogue


REF Dr. Ing. Seehase - Träger-rechenstab
Dr. Ing. Seehase - Träger-rechenstab - c1950
Made in Germany - Structural Calculator
Front Scale: cm [ m, cm ] Kg/m2
Back Slide:
[ m, (nomograph), cm ]
Back: Reference Tables, Nomographs
Archive - Herman's Slide Rule Catalogue


REF Dr. Ing. Seehase - Sonderrechenstab SR 704
Dr. Ing. Seehase - Sonderrechenstab SR 704 - c1950
Made in Germany - Spring Design Calculator
Front Scale: Wire dia [ Radius of coil, Kg/cm2 ] P gramm (force)
Archive - Herman's Slide Rule Catalogue


REF Dr. Ing. Seehase - Sonderrechenstab SR 705
Dr. Ing. Seehase - Sonderrechenstab SR 705 - c1950
Made in Germany - Spring Design Calculator
Front Scale: Number of coils [Wire dia, Radius of coil][stress, P (force) Kg/cm2 ] f (Travel) mm
Note: Two slides
Archive - Herman's Slide Rule Catalogue




Staedtler Mars 54401 Darmstadt

ISRM 17.05.22.06
Staedtler Mars 54401 Darmstadt
Made in Germany
Note: No scale labels. Nestler equivalents label on back.
Front Scale: 10.5 // L, K, A [ B, CI, C ] D, P, S Cos, T Cot
Back Scale: Equivalents (english) [ LL1, LL2, LL3]
Donated by Pamela Eaton Collection of Dennis, Massachusettes


Staedtler Mars 54401 Darmstadt

ISRM 07.02.12.02
Staedtler Mars 54401 Darmstadt - 1961
Made in Germany
Front Scale: 10.5 // L, K, A [ B, CI, C ] D, P, S Cos, T Cot
Back Scale: Equivalents (english) [ LL1, LL2, LL3]
Donated by Russell Fox, Anchorgae, Alaska.
This slide rule, and another in the Aristo gallerty, was used by Russel Fox's father who purchased it in Germany 1961-1964. His father worked as an Electrical Engineer with BPA in Portland, Oregon.


S093 Staedtler Mars 544LL
Staedtler Mars 544LL - Open Simplex
Made in Germany
Front Scale: L, K, A [ B, CI, C ] D, S (Cos), ST, T (Cot)
Back Slider
25cm [ S, LL1, LL2, LL3] 10 inch


Staedtler 544-08 Log Log Duplex (1963)

ISRM 22.07.06.48
Staedtler 544-08 Log Log Duplex - date code 563
Made in Germany by Nestler. Metal Braces.Plastic stock.
Front Scale: CT, T, ST, DF [ CF, CIF, CI, C ] D, P, S CS
Back Scale: LL01,LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Gift Of Cindy Tate of Bozeman, Montana. Victor B. Tate II Collection.


REF Staedtler Mars 544-28 Log Log
Staedtler Mars 544-28 Log Log - dc969 ( Sep 1969)
Made in Germany by Nestler (same as Nestler 0292)
Front Scale: P, S Cos, T1 Cot1, T2 Cot2, A [ B, K, CI, C ] D, R1, R2, L, ST
Back Scale: LL00, LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1, LL0
Multilined Cursor: kW, HP
Archive - Larry Kehl collection


S548 Staedtler Mars 544-52 Log Log
Staedtler Mars 544-52 Log Log (Jan 1969)
Made in Germany - date code 169
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: 25cm, S, ST, T, LL1, LL2, LL3, 10 inch
Multilined Cursor: kg/m, S, kW, HP


Staedtler Mars 544-55 Rietz-Scolaria

ISRM 17.05.22.13
Staedtler Mars 544-55 Rietz-Scolaria Date code 160 (Jan 1960)
Made in Germany - date code 160
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: S, ST, T
Back of Slide: Blank: Multilined Cursor: kg/m, S, kW, HP
Gift Pam Eaton of Dennis, Massachussettes.


Staedtler Mars 544-55 Rietz-Scolaria

ISRM 14.01.10.18
Staedtler Mars 544-55 Rietz-Scolaria (Feb 1962)
Made in Germany - date code 262
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: S, ST, T
Back of Slide: Blank: Multilined Cursor: kg/m, S, kW, HP
Gift of the Bill Wehrend Collection, Palo Alto, California.


Staedtler-Noris 944-02

ISRM 04.09.20.01-D7
Staedtler-Noris 944-02 - Open simplex
Made in Japan
Front Scale: L, K, A [ B, CI, C ] D, S, ST, T
Back Scale 25cm [S, LL1, Ll2, Ll3 ] 10in



S131 Staedtler-Noris 944-03
Staedtler-Noris_944-03 - Open simplex
Made in Japan
Front Scale: T1, T2, K, A [ B, CI, C ] D, S, ST, L
Back blank



Staedtler Mars 944-24 (1969)

REF
Staedtler Mars 944-24 - date code T.S.6
Made in Japan by Relay/Ricoh
Front Scale: LL0, L, K, A [ B, S Cos, ST ST, T Cot, C ] D, DI, P, LL0
Back Scale: LL1,LL2, LL3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Scan provided by the Steve Seale Collection, Nashville, Tennessee


Staedtler Mars 944-28 Log Log

REF
Staedtler Mars 944-28 Log Log
Made in Germany by Nestler (same as Nestler 0292)
Front Scale: L, K, A [ B, ST, T Cot, S Cos, C ] D, DI, LL0, LL-0
Back Scale: LL-1, LL-2, LL-3, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Multilined Cursor: C, kW, HP
Scan provided by the Steve Seale Collection, Nashville, Tennessee


Staedtler Mars 944-82 Log Log

ISRM 09.01.12.109
Staedtler Mars 944-82 Log Log
Made in Japan
Front Scale: T1 (Cot1), T2 (Cot2), DF [ CF, CIF, S' (Cos), C ] D, (P), S (Cos), ST (ST)
Back Scale: LL0, L, K, A [ B, BI, CI, C ] D, LL3, LL2, LL1
Multilined Cursor: kW, HP
Donated by David Hecht, Alexandria, VA


P178 Staedtler-Noris 945-03
Staedtler-Noris 945-03 - Closed
Made in Japan
Front Scale: 5in // K, A [ B, CI, C ] D, L
Back scale: [ S, ST, T ]


Standardgraph



REF - Standardgraph No. 910 Disco-Rietz
Standardgraph No. 910 Disco-Rietz
Made in West Germany c1960 - 12.8cm diameter
Front Scale - L, CI, C ( D, Sin Cos, Tg Ctg, R)
Archive - Scan donated by John Krijnen, Netherlands


VEB Electro-Apparate-Werke (EAW)



VEB Electro-Apparate-Werke (EAW) Pocket
I
SRM 09.01.12.109
Veb VEB Electro-Apparate-Werke (EAW) Pocket- c1946
Made by Berlin-Treptow, DDR Germany - wood stock with plastic laminate
Front Scale: 13cm // K, A[ B, CI, C ] D, L
Back Scale: [ sin, sin/tg, tg ]
Donated by David Hecht, Alexandria, VA
Note: VEB Electro-Apparate-Werke, later renamed Berlin-Treptow, was a public owned company founded in 1928 by Friedrich Ebert and made radios, relays and control equipment. Berlin-Treptow was one of the largest manufacturers of electric appliances in the GDR and had 8,000 employees. After Stalin's death the factory was renamed EAR JW Stalin. The company was privatized in 1993.


Veb-Mantissa



P107 Veb Mantissa Multi Pocket
Veb Mantissa Multi Pocket - Closed simplex
Made in DDR/Germany
Front Scale: 13cm // ST, A, DF [ CF, CIF, CI, C ] D, P, S, T
Back Slider: [ LL1, LL2, LL3, L ]
Cursor: 3 hairlines


Veb Mantissa Record 1731-421

ISRM 04.10.12.01-D7
Veb Mantissa Record 1731-421
Made in DDR/Germany
Front Scale: L, K, A [ B, CI, C ] D, LL1, LL2, LL3
Back Scale: P, S, ST, DF [ CF, CIF, CI, C ] D, T1, T2, DI


REF Veb Mantissa Trim LL 1731-433
REF Veb Mantissa Trim LL 1731-433
Made in DDR/Germany
Front Scale: P, S, K, A [ B, L, CI, C ] D, T1, T2, DI
Back Scale: LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Archive - Rod Lovett Collection


S200 Veb Mantissa 1731-511 Rietz
Veb Mantissa 1731-511 Rietz - Duplex
Made in DDR/Germany
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: [ S, ST, T ]
Cursor: 3 hairlines


S163 Veb Mantissa Darmstadt II 1731 523/4
Veb Mantissa Darmstadt II 1731-523/4
Made in DDR/Germany
Front Scale: K, A [ B, CI, C ] D, L
Back Scale: P, ST [ LL1, LL2, LL3] D, T, S


S059 Veb Mantissa Mono Rietz 1731-541
Veb Mantissa Mono Rietz 1731-541 - Simplex
Made in DDR/Germany
Front Scale: L, K, A [ B, CI, C ] D, S, T, ST
Back Slider: Blank
Cursor: 3 hairlines


Veb Mantissa Mono Rietz 1731 541

ISRM 09.01.12.105
Veb Mantissa Mono Rietz 1731 541
Made in DDR/Germany
Front Scale: L, K, A [ B, CI, C ] D, S, T, ST
Back: Blank
Donated by David Hecht of Alexandria, Virginia


Veb Mantissa Variant_II 1731-573/4

REF
Veb Mantissa Variant_II 1731-573/4
Made in DDR/Germany
Front Scale: ST, T, K, A [ B, CI, C ] D, P, S
Back Scale: 25cm, L, DF [ CF, CIF,, C ] D, LL1, LL2, LL3
Archive - Scan by Steve Seale Collection, Nashville, Tennessee.


Veb Mantissa Erdgas-verbrennung rechenschieber
Natural gas combustion Slide Rule

REF
Veb Mantissa Erdgas-verbrennung rechenschieber
Made in DDR/Germany for Freiberg Fuel Institute (1969)
Note: This slide rule has specialized scaled dealing with volume, flow rates, pressure and specific gravity relative to the natural gas industry.
Front Scale:
1:g[kg/mn3], 2, 3, 4 [ 5, 6, 7, 8 ] 9, 10, 11, 12
Back Scale:
1, 2, 3 [ 4, 5 ] 6, 7, 8
Archive - Scan by Steve Seale Collection, Nashville, Tennessee.


Veb Mantissa Feutron Klima-Rechenstab 1802
Climate and Humidity Slide Rule

REF
Veb Mantissa Feutron Klima-Rechenstab 1802
Made in DDR/Germany by VEB Manyissa for Feutron, Greiz, Germany (c1971)
Note: This slide rule has specialized scaled dealing with Climate And Humidity.
Front Scale:
Wasserdampfgehalt (g/kg), Taupunkttemperatur (&dec;C) [ Trockenthermometer, Gesamtdruck (760 Torr), absolute Luftfeuchte (g/m3) Feuchtthermometer (&dec;C), Warmeinheit (kcal/kg) ]
Back Scale:
Wasserdampfgehalt (g/m3), Warmeinheit (kcal/kg) [ Lufttemperatur (&dec;C), Saettigungsdampfdruck (Torr) ] Partialdampfdruck (Torr), Wasserdampfanteil (%)
Archive - Scan by Steve Seale Collection, Nashville, Tennessee.

Gebr. Wichmann (Wichmann Brothers), Berlin

!904-1905 Wichmann Catalog (Slide rule pages)



Gebr. Wichmann Slide Rule in Locomotive Data Book 1912
ISRM 20.04.10.068


Alba B. Johnson, Jr. Photo postcard with Mother 1905 Atlantic City, New Jersey; Alba Boardman Johnson in 1910, father; 19th Regiment in 1911.

Gebr. Wichmann Slide Rule in Locomotive Data Book 1912
Slide Rule Made in Germany, by Gebr. Wichmann.
Book Published by The Baldwin Locomotive Works, Philadelphia, PA
Size: 6-1/4 inchesa x 1-3/4 inches x 1/8 inch paperboard construction. knife-edge cursor.
Slide rule included as part of the Locomotive Data Book Published 1912 by The Baldwin Locomotive Works, Philedelphi, PA.
Front scales: A [B, C] D
Original owner: Alba B. Johnson, Jr. (1888-1938). His father, Alba Boardman Johnson (1858-1935), was the President of Baldwin Locomotive Works in 1911 which created this book. The junior has copious amounts of hand written math and calculation notes in the back pages of the book. He was a 1910 graduate of Princeton University and worked for Baldwin Locomotive Works. In 1911, he was a First Lieutenant, 19th Regiment Engineers (Railway), American Expeditionary Forces. In 1920, he was the foreign sales representitive of the Foundry Equipment Export Corp. in London, England. He later became an oil executive associated with the export sales department of the Atlantic Refining Company. He died in Montgomery, PA after a week's illness, just three years after his father died. His father's estate was worth $3 million in 1935.
Gift of Philip Stanley Collection
Instructions (177MB pdf) 1921


Gebr. Wichman Pocket Watch Slide Rule (1938)

ISRM 15.09.27.07
Gebr. Wichmann Pocket Watch Slide Rule (1938)
Made in Berlin, Germany. Note: Also in Pocket Watch gallery.

70mm diameter x 10mm
Front scales: ?, A ( B ?, ? )
Back scales: sin, F (G1, G2, G3, G4)
Note: This specimen has a cellulois lens that have faded and warped. There was excessive abrasion on one side from the lens that wiped of the scales. It's hard to see the scales so another scan was performed with the lens removed. It was then noticed that the stem which spins the center dials was missing.



Wichmann Bros. Mannheim (D&P)

REF
Wichmann Bros. Mannheim (D&P)
Made in Germany by Dennert & Pape for Gebr. Wichmann m.b.h. (Wichmann Brothers)
Front Scale: 25cm // A [ B, C ] D || 28cm
Back scale: [S, L, T ]
Well: 27cm - 54cm
Archive - Scan provided by Andreas Fassbender Collection


Gebr, Wichmann 431

REF
Gebr. Wichmann 431 c1900
Made in Berlin, Germany by Wichmann Brothers - Paper composite with brass chisel cursor
Front Scale: A [ B, C ] D
Back: Blank
Archive - Ed Chamberlain Collection


Gebr. Wichmann 466

REF
Gebr. Wichmann 466 c1900
Made in Berlin, Germany by Wichmann Brothers - Paper composite with brass chisel cursor
Front Scale: A [ B, C ] D
Back: Blank
Archive - Ed Chamberlain Collection


Gebr. Wichmann 1327-1/2

REF
Gebr. Wichmann 1327-1/2
Made in Germany by Gebr. Wichmann m.b.h. (Wichmann Brothers)
Front Scale: A [ B, C ] D
Archive - Herman van Herwijnen's SR Catalogue


Gebr. Wichmann Nr.1427 Mannheim

ISRM 22.07.06.09
Gebr. Wichmann Nr.1427 Mannheim
Made in Germany by Gebr. Wichmann m.b.h. (Wichmann Brothers)
Front Scale: 27cm // A [ B, C ] D || 1:25
Back Scale: [ S, S&T, T ]
Back Equivalents (German)
Gift Of Cindy Tate of Bozeman, Montana. Victor B. Tate II Collection.


Wichmann 4428

REF
Gebr. Wichmann 4428
Made in Germany by Gebr. Wichmann m.b.h. (Wichmann Brothers)
Front Scale: A [ B, C ] D
Back scale: 27.2cm [S, L, T ] 10.75in
Archive - Scan provided by Mark D. Sutton


Wichmann Berlin Electro

REF
Wichmann Berlin Electro
Made in Germany by Koch, Huxhold & Hanneman for the Wichmann Brothers
Front Scale: 16cm // LL1, A(KW) [ B(mm2, P), C (W) ] D, LL2
Back scale: unknown
Well: Dynamo, Motor efficiency n=%
Archive - Scan provided by Andreas Poshinger of Germany

Copyright © 2003-
International Slide Rule Museum