Eastern Europe Slide Rules
(Manufacturers. Distrubutors and Countries not found in their own gallery)
This gallery is dedicated to slide rules and manufacturers located within Eastern Europe. Additional Countries and manufacturers which were part of the Soviet Bloc may be found in the USSR/Soviet gallery (Includes Ukraine, Lithuania, Latvia, Estonia, Georgia and other countries which were created after the collapse of the USSR).
Manufacturers/Brands Represented in this gallery:
Gamma - Hungary, Logar - Hungary, Logarex Czech Republic, Skala - Poland,
Tehnolemn - Romania, Terta - Hungary, UGK - Sofia, Bulgaria
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Gamma

Gamma Mũvek Works (Factory), Budapest, Hungary (1981)


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-Budapest 2503 Darmstadt
Gamma-Budapest 2503 Darmstadt
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.
Archive - Herman van Herwijnen's Slide Rule Catalogue


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

KAUZ Instytut Dowodzenia




Side 1

Side 2
KAUZ Kalkulator
KAUZ Kalkulator
Made in Poland. ASG 1967
Scales: At this point it appears to ne a Nuclear Effects calculator
Google translation: Reversible slider (35 cm x 25 cm) called "CALCULATOR AND DESTRUCTION OF NUCLEAR beats" The scale of production, 1967 On a scale lists all possible objects: roads, rails, bridges, water, cars, buses, guns, tanks, planes, rockets, etc, etc and their possible locations
Archive - Photo by Jacek Szukowski collection

Logar

Note that the label MSZ4617-57 is a standard like the USSR GOST system, not a model number. It appears on both 27cm and 13cm pocket Hungarian Logar models.

Moni István in Hungary. contributes the following (edited by ISRM):
The 'Losztályu' found in the well of Logar slide rules means: 'First class'. 'Logar' is a brand name. Grammatically it is the first letters of 'Logarléc' which means Slide Rule. (In Hungarian it is a compound word: logar-léc, means logarithmic or algorithmic ) In Hungary, on the eastern side of the Iron Curtain we used to invent new brand names for two reasons, First, so it would sound better in the West. If a product was developed and intended to be sold to Western markets, it received a new name. Second: during Socialism, we did not have many competing factories or brands. Only one or two companies in the governments hands. The slide rules were manufactured by Gamma Mũvek Works in Hungary. The Hungarian Socialist Party had a policy of forcing a manufacturer to provide multiple names to a product, so the Hungarian people could think they were choosing from not one, but two brands. In this case, Gamma AND Logar slide rules, even though they are basically the same manufacturer. (in the USA we re-branded Hemmi and Ricoh slide rules also).



REM Logar Rietz Pocket
Logar Rietz Pocket
Made in Hungary - MSZ 4617-57 standard
Front Scale
13cm, L, K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Cursor: 3 hairlines
Scan By Shin Ghain Collection


REM Logar Darmstatd
Logar Darmstatd
Made in Hungary - MSZ 4617-57 standard
Front Scale
25cm, L, K, A [ B, CI, C ] D, P || S, T
Back Scale: [LL1, LL2, LL3] Constants
Cursor: 3 hairlines
Scan By Giovanni Breda Collection, Italy

LOGAREX, Ceske Budejovice
Czechoslovakia - Bohemia Works

Founded before WWII, the Logarex company was a factory for fabricating drawing instruments. From 1948 to 1950 Logarex belonged to L&C Hardtmuth, which made the Koh-I-Noor brand pencils. After becoming a state run business as part of the Soviet empire, LOGAREX made slide rules mainly for the Eastern Block.


Logarex 27103 Rietz (early)

ISRM 09.01.12.111
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


Logarex 27401-X Rietz
ISRM 09.01.12.112
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


Logarex 27402-X Elektro

REF
Logarex 27402-X Elektro
Made in Czechoslovakia - Bohemia Works
Front Scale (extended scales)
L, K, A [ B, CI, C ] D, LL1, LL2, LL3
Back Scale
Equivalents [ S, ST, T] Equivalents/Factors
Multiple hairline cursor: q, PS, Hp, KW, d
Scan by Steve Seale Collection, nashville, Tennessee.


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


Logarex 27730 Gas Slide Rule
Plynárenské Pravítko, Ceské Plynárenské Podniky

REF
Logarex 27730
Marked: Plynárenské Pravitko (Gas Ruler), Ceské Plynárenské Podniky (Czech Gas Enterprises) Made in Czechoslovakia - Bohemia Works
Front Scale:
25cm // Pz-Pk, x2, P2z-P2k [ L, D ] Q, x
Back: Instructions in Czech.
Multiple hairline cursor: Ssv=0.40, Szp=0.65, Ssv=0.50
Scan by Steve Seale Collection, Nashville, Tennessee.

SKALA (SCALE) - Warszawa, Poland

Cooperative SCALE - a company known mainly from the production of accessories and drafting aids. including slide rules, The head office is located in Warsaw, in the district of Wola on Odolanch , ul. Gizów 6th SKALA (or SCALE) was created after World War II in 1950, based on the "St. Szymanski and K. Gypsy" company established in 1929. The company, which dealt with the supply of equipment initially relying on imports, slowly becoming a producer. SKALA is now the only Polish manufacturer of compasses, technical and precise, and also produces small and medium-sized plastic drawing instruments, especially for technical school workshops. The president of the cooperative is Andrew Rowinski, and the company is currently engaged in manufacturing, marketing and services, and has a network of company-owned stores. See www.sp-skala.com.

Several of the SKALA slide rules have "ZAKt.im.dymitrowa Warszawa" or similar markings in the well. "Zaklady im. Dymitrowa" was a name of the manufacturing plant in Warsaw after the WWII. The factory was founded in the early 30s by an electrical engineer and manufactured electrical high-voltage control equipment. The communists nationalized the plant, expelled the owner (a capitalist, the "enemy of the people") and re-named the factory after a Bulgarian communist, George Dimitrov. The name had nothing in common with any manufacturing standards, communists named most of the factories after their heroes.



REF SKALA Pocket Simplex (old Version)
SKALA Simplex
Made in Poland
Front Scale (extended)
K, A [ B, CI, C ] D, L
Back Scale (not verified)
[ Sin, S&T, Tg ]
Archive - Photo by Jacek Szukowski collection (Poland)


REF SKALA Rietz Pocket Simplex
SKALA Rietz Pocket Simplex
Made in Poland - c1973
Front Scale (extended)
K, A [ B, CI, C ] D, L
Back Scale (not verified)
[ Sin, S&T, Tg ]
Archive - Scan By Giovanni Breda Collection (Italy)


REF SKALA SKLM Pocket
SKALA SKLM Pocket
Made in Poland
Front Scale (extended)
L, P, K, A [ B, CI, C ] D, Sin. Tan, S-T
, Back Side: blank
Archive - Photo by Jacek Szukowski collection (Poland)


REF SKALA Paper Scales School Version
SKALA Paper Scales School Version
Made in Poland
Front Scale
A [ B, C ] D
Back: Resistance of metals, factors, equations

Archive - Photo by Jacek Szukowski collection (Poland)


REF Skala 26462 Simplex
Skala 26462 Simplex
Made in Poland
Note: Railroad track type divisions
Front Scale (Extended)
27 CM // K, A [ B, CI, C ] D, L || 1:25
Back Scale
[ Sin, S&T, Tg ]
Archive - Scan By Giovanni Breda Collection.


REF Skala SLPG 62026 Simplex
Skala SLPG 62026 Simplex (1973)
Made in Poland
Note: Railroad track type divisions
Front Scale (Extended)
27 CM // K, A [ B, CI, C ] D, L || 1:25
Back Scale
[ Sin, S&T, Tg ]
Scan of slide rule and manual donated by John Kijnen, the Netherlands.


REF Skala SLPP 170083
Skala SLPP 170083
Made in Poland
Front Scale (Extended)
L, P, K, A [ B, CI, C ] D, Sin, Tg, S&t
Back: Blank
Scan of slide rule and manual donated by John Kijnen, the Netherlands.


REF Skala SLE Electrical
Skala SLE 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 - Scan By Giovanni Breda Collection (Italy)

PRZYRZAD DO WSTRZELIWANIA



PRZYRZAD DO WSTRZELIWANIA Military Artillery Circular

Fold 1

Cover
PRZYRZAD DO WSTRZELIWANIA Military Artillery Circular
Made in Poland. Wz.1944
Scales: 2 circular slide rules for artillery
See also SKALA version
Archive - Photo by Jacek Szukowski collection (Poland)


REF Logarytmiczna Military Artillery Circular



Cover
PRZYRZAD DO STRZELIWANIA Logarytmiczna Military Artillery Circular
Made in Poland Wz.1987
Two disks on a three fold assembly

Archive - Photo by Jacek Szukowski collection (Poland)


Tehnolemn - Romania
Riglas de Calcul


S494 Tehnolemn STAS-6188-60 LEI-165 R.P.R.
Tehnolemn STAS-6188-60 LEI-165 R.P.R.
Made in Romania People's Republic
Front Scale (extended scales)
27cm // K, A [ B, CI, C ] D, L
Back Scale: [S, ST, Tg ]
Cursor: Multiple Hairlines, Kw, CP, d, d, q
Back: Equivalent, Material Properties




REF Tehnolemn STAS-6188-60 LEI-43.50 R.P.R.
Tehnolemn STAS-6188-60 LEI-43.50 R.P.R.
Made in Romania People's Republic
Front Scale (extended scales)
K, A [ B, CI, C ] D, L
Back Scale: [Sin, S&T, Tg ]
Cursor: Multiple Hairlines, Kw, CP, d, d, q
Archive - Jim Cerny and Bob Adams Collection


REF Tehnolemn 1473-66 LEI-215 R.P.R.
Tehnolemn STAS-6188-60 LEI-215 R.P.R.
Made in Romania People's Republic
Front Scale (extended scales)
27cm // P, K, A [ B, BF, CI, C ] D, LL3, LL2, Ll1 || L, 1:1.25
Well: Dynam, Motor, Volt
Back Scale: [S, ST, T ]
Cursor: Multiple Hairlines, Kw, CP, d, d, q
Archive - Jim Cerny and Bob Adams Collection


REF Tehnolen 1473-66 LEI-200 R.P.R.
Tehnolemn 1473-66 LEI-200 R.P.R.
Made in Romania People's Republic
Front Scale (extended scales)
27cm // LL2, K, A [ B, BF, CI, C ] D, P, LL3 || L
Well: Dynam, Motor, Volt
Back Scale: [S, ST, T ]
Cursor: Multiple Hairlines, Kw, CP, d, d, q
Archive - Jim Cerny and Bob Adams Collection

Terta
Hungary


REF Terta_Logartarcsa
Terta_Logartarcsa
Made in Hungary

Archive - Budai János Collection (Hungary)

UGK
Sofia, Bulgaria


P218 UGK RPGP Pocket
UGK RGPG Pocket Open Simplex
Made in Made in Bulgaria from RPGP - Sofia, Bulgaria
Front Scale
K, A [ B, CI, C ] D, L
Back Scale: [ S, ST, Tg]
Note: The UGK RPGP is the name of the factory which produced the above instrument. RPGP stands "Research company for geodesic instruments".

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