European Slide Rules (Manufacturers. Distrubutors and Countries not found in their own gallery) This gallery is dedicated to slide rules and manufacturers located within Central and Eastern Europe. Additional Countries and manufacturers which were part of the Soviet Bloc may be found in the USSR/Soviet gallery.

KEEP ISRM FREE!

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)

CURTA Calculator
Contina AG Mauren

ISRM CURTA Type I	CURTA Type I sn20141 (Mfg'd January 1953) Made in Liechtenstein, Designed by Curt Herzstark The Type I Curta has 8 digits for data entry (known as "setting sliders"), a 6-digit revolution counter, and an 11-digit result counter. . Owned by Ward Anthony, Littleton, Colorado. Provided by his son Russell Anthony Ward Anthony (1938-2012) was an aerospace engineer at Martin Marietta in Littleton, Colorado and worked on many of the launch systems. He used this CURTA in his profession as well as while competing in car rallye's Instructions (370Kb PDF) More Information at The CURTA Page
REF CURTA Type II (Metal Body)	CURTA Type II (Metal Body) Made in Liechtenstein, Designed by Curt Herzstark The larger Type II Curta, introduced in 1954, has 11 digits for data entry (known as "setting sliders"), an 8-digit revolution counter, and a 15-digit result counter. Archive - Photo courtesy of The CURTA Page
REF CURTA Type II (Plastic Body)	CURTA Type II (Plastic Body) Made in Liechtenstein, Designed by Curt Herzstark The larger Type II Curta, introduced in 1954, has 11 digits for data entry (known as "setting sliders"), an 8-digit revolution counter, and a 15-digit result counter. Archive - Photo courtesy of The CURTA Page

P106 Eco-Bra 1270	Eco-Bra 1270 Pocket - Closed simplex Made in Germany - c1940 - all aluminum Front Scale (unmarked) 14cm // A [ B, C ] D Back Adv: Aluminum Company of Canada
REF Eco-Bra Rietz R141	Eco-Bra Rietz R141 Made in Germany - c1960 - Plastic Front Scale 13cm // A [ B, CI, C ] D, K Archive - W. Girbardt (Univ Greifswald, Germany) Collection
P257 Eco-Bra Darmstadt R143	Eco-Bra 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
P267 Eco-Bra nr1461 System Rietz	Ecobra nr1461 System Rietz Made in Germany - c1950 - Painted aluminum Front Scale K, A [ B, R, C ] D, lg Back Scale 5in [ sin, tg ] Original location: Netherlands
REF Eco-Bra 154 Cosmos	Eco-Bra 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
REF Eco-Bra 1460	Eco-Bra 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
REF Eco-Bra 1500	Eco-Bra 1500 Made in Germany - c1940 - all aluminum Front Scale 25cm // K, A [ B, CI, C ] D, L Archive - W. Girbardt (Univ Greifswald, Germany)Collection
ISRM Eco-Bra 1611 Darmstadt Special	Eco-Bra 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
REF Eco-Bra 1711 Cosmos	Eco-Bra 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

ISRM Fedra Log Log

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

P182 Friedmann 4in Pocket Mannheim

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

Gamma

P014 Gamma Pocket	Gamma Pocket - Closed simplex Made in Hungary Front Scale (unmarked) 13cm // K, A [ B, CI, C ] D, L Back Slider [ S, S&T, T ]
REF Gamma Thermotechn. 2512 Darmstadt dc42	Gamma Thermotechn. 2512 Darmstadt dc42 Made in Hungary Front Scale (unmarked) 27cm, L // K, A [ B, CI, C ] D, P || S, T Back Slider [ LL1, LL2, LL3 ] Back: Equivalents and Conversion factors Note: Early riveted laminated wood stock, railroad track divisions, Plastic cursor with hairline wrapped on edges. Scan Donated by Giovanni Brenda Collection, Italy

---

H-H Universum

P255 H-H Universum System Rietz

H-H Universum System Rietz Made in Germany - c1930 Front Scale - Extended 22cm // A [ B, CI, C ] D, L \\ 22cm Back Scale: [ S, T ] Multilined Cursor Back: Conversions (German)

IWA - Ingenieurerbüro für wirtschafliches Arbeiten

REF IWA 0272 Electronic	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
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

---

Karl-Wess

P125 Karl Wess

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

---

Kern & Co. Aarau, Suisse

REF Kern Stadia Surveyor's Slide Rule	Kern Stadia Surveyor's Slide Rule Made in Switzerland by Kern & Co. Aarau, Suisse Closed body - Steel stock and cursor Front Scale D, D [ X, Sin-Cos, TG. ] F-R Cursor: 0-100 veneer scale Archive - Tom dilatush Collection
REF Kern Stadia Surveyor's Slide Rule	Kern Stadia Surveyor's Slide Rule Made in Switzerland by Kern & Co. Aarau, Suisse Closed body - Aluminum stock and cursor Front Scale Dist. Feet, Dist Miles [ Vertical Angles ] Diff. Elev. Part, Correction in Feet For Curvature. Archive - David Ingram Collection -  www.surveyhistory.org

---

Joe Franz Klawun
Feinmessinstitut Klawun, Berlin - Charlottenburg 5

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
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
ISRM Feinmessinstitut Klawun Aristo 0908 TriLog (1973)	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
ISRM Joe Klawun No1001/S - System Klawun (Business Rule) Der Rechenstab des Kaufmanns - System Klawun	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."

Loga Daemon-Schmid, Zurich, Switzerland

REF Daemen-Schmid (Loga) 24 meter cylindrical	Daemen-Schmid (Loga) 24 meter cylindrical Made in Switzerland by Daemon-Schmid 1915-1920 Paper faced aluminum drum CD (100-1000) scales divided into 60 segments for a total length of 24 meter Archive - Ed Chamberlain Collection Galai Photo.
Ref Loga Calculator (Daemen-Schmid) 15 meter cylindrical	Loga Calculator (Daemen-Schmid) 15 meter cylindrical Made in Switzerland by Daemon-Schmid
ISRM Loga (Daemen-Schmid) 7.5 meter cylindrical	Loga (Daemen-Schmid) 7.5 meter cylindrical Made in Switzerland by Daemon-Schmid c1930
REF Loga (Daemen-Schmid) 7.5 meter cylindrical	Daemen-Schmid (Loga) 7.5 meter cylindrical Made in Switzerland by Daemon-Schmid c1930 Archive - Ed Chamberlain Collection
ISRM Loga (Daemen-Schmid) 2.5 meter cylindrical	Daemen-Schmid (Loga) 2.5 meter cylindrical Made in Switzerland by Daemon-Schmid c1930 Archive - Herman's Slide Rule Catalogue
REF Loga Slide Rule	Loga Slide Rule Made in Switzerland - Paper and metal backing Front Scale: Zz(K1), A [ B, R, C ] D, Zz(K2) Back Scale: A [ B, R ] C, Currency Conversions Archive Herman van Herwijnen's Slide Rule Catalogue
REF Loga Pocket Slide Rule	Loga Pocket Slide Rule Made in Switzerland - Paper and metal backing Front Scale: K, A [ B, R, C ] D, Log Back Scale: A [ B, R ] C, Currency Conversions Archive Herman van Herwijnen's Slide Rule Catalogue

Logarex

ISRM Logarex 27103 Rietz (early)	Logarex 27103 Rietz (early) Made in Czechoslovakia - Bohemia Works Front Scale K, A [ B, CI, C ] D, log Back Scale 4in, Ωmm2/m [ S, T] Constants, 10cm Cursor: 4 hairlines: q, kW, d, PS Donated by David Hecht, Alexandria, VA
P183 Logarex 27103 Rietz	Logarex 27103 Rietz Made in Czechoslovakia - Bohemia Works Front Scale K, A [ B, CI, C ] D, L Back Scale 4in, Ωmm2/m [ S, T] Constants, 10cm Cursor: 4 hairlines: q, kW, d, PS
ISRM Logarex 27203 Darmstadt Pocket	Logarex 27203 Darmstadt Pocket Made in Czechoslovakia - Bohemia Works Front Scale 12.5cm // P, K, A [ B, L, CI, C ] D, Sin, Tan Back Scale 1:25 scale 3m [ LL1, LL2, LL3] Constants, 10cm Cursor: 4 hairlines: Donated by Richard Davis, Las Vegas Nevada
P171 Logarex 27204-II Rietz	Logarex 27204-II Rietz Made in Czechoslovakia - Bohemia Works - Date 7-65 Front Scale K, A [ B, CI, C ] D, L Back Scale 12.5cm [ S, S-T, T ] 5in, Equivalents Cursor: 3 hairlines
P039 Logarex 27205 Exponent	Logarex 27205 Exponent - Duplex Made in Czechoslovakia - Bohemia Works Toisen DOR Front Scale (extended scales) L, P, K, A [ B, CI, C ] D, tg, sin, s-t Back Scale LL1, LL2, LL3, DF [ CF, CIF, CI, C] D, LL00, LL01, LL02 Cursor: 3 hairlines: PS, KW, q, d
P115 Logarex 27302	Logarex 27302 Made in Czechoslovakia - Bohemia Works Front Scale 15cm, P, K, A [ B, L, CI, C ] D, S, T Back Scale 40mm(1:25) [ LL1, LL2, LL3 ] Table of Constants Cursor: 4 hairlines
ISRM Logarex 27401-X Rietz	Logarex 27401-X Rietz Made in Czechoslovakia - Bohemia Works Front Scale (extended scales) K, A [ B, CI, C ] D, L Back Scale Equivalents [ S, ST, T] Equivalents Multiple hairline cursor: q, PS, KW, d Donated by David Hecht, Alexandria, VA
ISRM Logarex 27403-X Darmstadt	Logarex 27403-X Darmstadt Made in Czechoslovakia - Bohemia Works Front Scale (extended scales) L, P, K, A [ B, CI, C ] D, Sin, Tg, S-T Back Scale Equivalents [ LL1, LL2, LL3 ] Equivalents Multiple hairline cursor: q, PS, KW, d Original Location: Russia Donated by Richard Davis, Las Vegas, Nevada
S339 Logarex 27403-II Darmstadt	Logarex 27403-II Darmstadt Made in Czechoslovakia - Bohemia Works Front Scale (extended scales) 25cm, L, P, K, A [ B, CI, C ] D, Sin, Tg, S-T || 1:25 7m Back Scale [ LL1, LL2, LL3 ] Cursor: 4 hairlines: q, kw, d, PS Has Previous Owner's Monogram on back
ISRM Logarex 27602	Logarex 27602 Made in Czechoslovakia - Bohemia Works - Toisen DOR Front Scale (extended scales) ST, P, K, A [ B, log, C ] D, Tg, Sin Back Scale LL1, LL2, LL3, DF [ CF, CI, C ] D, LL00, LL01, LL02 Cursor: 3 hairlines Donated By Zdenka Novosad, Louisville, Colorado Zdenka was given this slide rule by her boyfriend in her first year at university, a very expensive item at the time. She graduated with a masters degree in Czechoslovakia. She received a PhD. from the University of Pennsylvania (1975) and later became a Petroleum Engineer for Shell Canada Limited and was a member of the Society of Petroleum Engineers. One of her many papers, published in 1996 by the journal 'SPE Reservoir Engineering', was Composition and Phase Changes in Testing and Producing Retrograde Gas Wells and she wrote Spectroscopic and Magnetic Resonance Studies of Aromatic Molecules published by the Graduate School of Arts and Sciences, University of Pennsylvania, 1975. Currently retired and an active tennis player.
ISRM Logarex 27602-II Exponent	Logarex 27602-II Exponent Made in Czechoslovakia - Bohemia Works - Toisen DOR Front Scale (extended scales) L, P, K, A [ B, CI, C ] D, S, T, ST Back Scale LL1, LL2, LL3, DF [ CF, CIF, CI, C ] D, LL00, LL01, LL02 Cursor: 3 hairlines: PS, KW, q, d
ISRM Logarex 27607-I Studio	Logarex 27607-I Studio - Duplex Made in Czechoslovakia - TECHNIK, Bohemia Works Toisen DOR Front Scale: ST, T1, T2, DF [ CF, CIF, CI, C] D, P, S Cos Back Scale (extended): LL01, LL02, LL03 A [ B, L, K, C ] D, LL3, LL2, LL1 Cursor: 3 hairlines: PS, KW, q, d Donated by Richard Davis, Las Vegas, Nevada

Meissner

REF Meissner KG Multi Pocket	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 (unverified): [ LL1, LL2, LL3, L ] Cursor: multiple hairlines Archive - Gerhard Wenzel collection (Netherlands)
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

Norden

P060 Norden-SKF

Norden-SKF Made in Sweden Front Scale 14cm // K, A [ B, CI, C ] D, L \\ sin cos Back  Adv: SKF Back Scale [ Log, tg ctg, P ]

Reiss

P002 Reiss Pocket Simplex	Reiss Simplex Made in Germany - brushed aluminum Front Scale 13 CM // A [ B, C ] D Back Scale [ Sin, Log, Tg ]
Reiss 3201 Rietz-Spezial	Reiss 3201 Rietz-Spezial Made in Germany - brushed aluminum Front Scale L, DF [ CF, CI, C ] D, DI Back Scale (extended) ST, T [ K, B, C ] S, P
REF Reiss 3209 Pocket Simplex	Reiss 3209 Simplex (1972) Made in Germany - brushed aluminum Front Scale (extended) 13 CM // K, A [ B, C ] D, L Back Scale (not verified):[ Sin, S&T, Tg ] Archive - Gerhard Wenzel collection
REF Reiss 3214 Darmstadt-Record	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 Photo contributed by Marion Moon
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
ISRM Reiss Rietz	Reiss Rietz 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
ISRM Reiss Darmstadt DDR	Reiss Darmstadt DDR - Duplex Made in East Germany - Plastic Front Scale K, A DF [ CF, CIF, CI, C ] D, P, S, T Back Scale [ LL1, LL2, LL3, L] Cursor: 4 hairlines Donated by David Hecht, Alexandria, VA
Reiss Darmstadt DDR	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
S038 Reiss Rietz	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

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

Seehase, Dr. Ing.

P015 Dr. Ing. Seehase Pocket	Dr. Ing. Seehase Pocket - Advertising - c1950 Made in Germany Front Scale A [ B, C ] D Back: Hardwick Hindle Inc. Resistors, USA
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

Skala

REF Skala Pocket Simplex	Skala Simplex (1973) Made in Poland Front Scale () 15 CM // K, A [ B, CI, C ] D, L Back Scale (not verified) [ Sin, S&T, Tg ] Archive - Gerhard Wenzel collection
REF Skala Electrical	Skala Electrical Made in Poland Front Scale () Efficiency, Volt, L, P, K, A [ B, CI, C ] D, LL3, LL2, sin cos, tg ctg, S-T Back Scale (unknown) Archive - Prof. Dr. Jörn Luetjens collection

GFT Staedtler Mars 54401 Darmstadt	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. Used by his father who purchased it in Germany 1961-1964. He 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, ST, T Back Slider 25cm [ S, LL1, LL2, LL3] 10 inch
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, T1, T2, 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
REF Staedtler-Noris 944-02	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 Archive - Not in Collection
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
ISRM Staedtler Mars 944-82 Log Log	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_944-03 - 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

TEKNOR

Need TEKNOR No.1055 Grundskola Slide Rule or image
Need TEKNOR No.1061 Högstadium Slide Rule or image
ISRM TEKNOR No.1081 Gymnasium	TEKNOR No.1081 Gymnasium Made in Japan for Swedish Distributor TEKNOR (by Uchida Yoko, Co) Note: Exactly the same as Technical Sales 1081 TechLog Emblem Series Front Scale LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1 Back Scale T2, T1, ST, DF [ CF, CIF, CI, C ] D, P, S Cos Cursor: Multiple Hairlines Donated by Richard Davis, Las Vegas, Nevada

VEB Electro-Apparate-Werke (EAW)

ISRM VEB Electro-Apparate-Werke (EAW) Pocket

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

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
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
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
REF Veb Mantissa Record 1731-421	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 Archive - Not in Collection
ISRM Veb Mantissa Mono Rietz 1731 541	Veb Mantissa Mono Rietz 1731 541 Made in DDR/Germany Front Scale L, K, A [ B, CI, C ] D, S, T, ST Back: Blank
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

Gebr. Wichmann (Wichmann Brothers)

REF Gebr, Wichmann 431	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
REF Gebr. Wichmann 466	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
REF Gebr. Wichmann 1327-1/2	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
REF Wichmann 4428	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

Wolters-Noordhoff

REF Wolters-Noordhoff Rietz 87	Wolters-Noordhoff Rietz 87 Made in Japan (Fuji) for Dutch Company Front Scale K, A [ B, CI, C ] D, L Back Slide 0-15cm, 15-0cm [ S, T, T1 ] Archive - Herman van Herwijnen's SR Catalogue
S062 Wolters-Noordhoff FJ102	Wolters-Noordhoff FJ102 - Simplex Made in Japan (Fuji) for Dutch Company Front Scale L, DF [ CF, CIF, CI, C ] D, A, K Back Slide 25cm [ S, ST, T1, T2 ] Cursor: 3 hairlines
REF Wolters-Noordhoff 112	Wolters-Noordhoff 112 Made in Japan by Fuji Front Scale L, DF [ CF, CIF, CI C ] D, A, K Cursor: 3 hairlines: PS, KW, C Back Scale 25cm [ S Cos, ST , T1 Cot1, T2 Cot2 ] Archive - Rod Lovette Collection
REF Wolters-Noordhoff JE650	Wolters-Noordhoff JE650 - Duplex Made in Germany for Dutch Company Front Scale A, DF [ CF, CIF, CI, C ] D, K Back Scale L, T1 Cot1, T2 Cot2 [ S', CI, C ] D, S Cos, ST Cursor: 3 hairlines Archive - Herman van Herwijnen's SR Catalogue
S063 Wolters-Noordhoff 1200	Wolters-Noordhoff 1200 - Duplex Made in DDR/Germany Front Scale T1 Cot1, T2 Cot2, A [ B, BI, CI C ] D, P, S Cos, ST Back Scale LL1, LL2, LL3, DF [ CF, CIF, CI C ] D, L, K Cursor: 3 hairlines: PS, KW, C

Zulaica y Cia

REF Zulaica Stilus

Zulaica Stilus (c1930) Made in Spain by Zulaica y Cia S.R.C., Zarauz, Guipuzcoa, Basque region Front Scale A [ B, CI, C ] D Back Equivalents and constants Archive - Herman van Herwijnen's SR Catalogue