The Complete Hyperbolic Archive


Maker & ModelFront ScalesBack Scales
ADF Products (USA)
ADF 103 Engineer's Semi-Circular Slide Rule

PHOTO
|| D, L, DI, S, T, ST, K, R, LL3, LL2, LL1, LL01, LL02, LL03, TH, SH2, SH1, LL0, LL00 ||
ALVIN (Japan San-Ai Group)
ALVIN ELITE VECTOR No. 1157

PHOTO
|| Sr, SΘ & , P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; SΘ is degrees || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lg x
ARISTO (Germany) Made in Hamburg
ARISTO HyperboLog No. 971

PHOTO
||LLo1, LLo2, LLo3, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T&T, ST, S&S, C || D, DI, Sh2, Sh1 ||
ARISTO (Germany) Made in Germany
ARISTO HyperboLog No. 0971

PHOTO
|| LLo1, LLo2, LLo3, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T&T, ST, S&S, C || D, DI, Sh2, Sh1 ||
ARISTO (Germany)
ARISTO HyperLog No. 0972

PHOTO
|| LLoo, LLo1, LLo2, LLo3, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1, LLo || || H2, Sh2, Th, K, A || B, T&T, ST, S&S, P, C || D, DI, Ch, Sh1, H1 ||
ARQUIMEDES (Brazil)
Archimedes Vectolog 21-D
|| LLo1, LLo2, LLo3, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || || L, K, A || B, T, ST, S, C || D, Th, Sh2, Sh1 ||
BEACON (Korea)
BEACON KOREA No. 315
|| L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || ||Sh1, Sh2, Th, A || B, TI2&TI2, TI1&TI1, SI&SI, C || D, DI, X, Θq || Note: X is radians; Θ is degrees.
BLUNDELL (Great Britain)
Multilog Vector Duplex No. JV 56 Vector Janus
|| LL01, Ll02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || || Sinh1, Sinh2, Tanh, A || B, T&T, ST, S&S || D, DI, K, L ||
BLUNDELL (Great Britain)
Log-Log Electro No. 506 ( Academy Duplex)

PHOTO
|| LL01, Ll02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || || Sinh1, Sinh2, Tanh, A || B, T&T, ST, S&S || D, DI, K, L ||
BLUNDELL (Great Britain)
Log-Log Electro No. A506 ( Super Duplex)

PHOTO
|| LL01, Ll02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2, LL1|| || Sinh1, Sinh2, Tanh, A || B, T&T, ST, S&S || D, DI, K, L ||
CHINA BEIJING
6681 Haiou Pai (Seagull)
|| Ln01, Ln02, Ln03, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1 || CF is folded at π || L, Sh1, Sh2, A || B, T, ST, S, C || D, P, Th, Ch ||
CHINA BEIJING LIXUE
No number
CHINA SHANGHAI
Cultural Revolution Slide Rule 1002
CHINA SHANGHAI
1015-1
CHINA SHANGHAI
1018
CHINA SHANGHAI
5891
COMPASS (JAPAN San-Ai Group)
No. 1325

PHOTO
|| Sr, SΘ, P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; SΘ deg || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lg x
DIETZGEN (USA) Vector Type Log Log
No. 1735 Maniphase Multiplex (Variation 1)

PHOTO
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1||
DIETZGEN (USA) Vector Type Log Log
No. 1735 Maniphase Multiplex (Variation 2)
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || L, LL01, LL1, A || B, T& T, ST, S& S || D, Th, Sh2, Sh1||
DIETZGEN (USA) Vector Type Log Log
No. 1735 Maniphase Multiplex
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T& T, ST, S& S || D, DI, LL01, LL1||
DIETZGEN (USA) Vector Type Log Log
No. N1725 Maniphase Multiplex
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T<45°&T<45°, T>45°&T>45°, ST, S&S || D, DI, Sh2, Sh1 ||
DIETZGEN (USA) Vector Type Log Log
No. N1725
DIETZGEN (USA) Vector Type Log Log
No. N1725 Micromatic (Variation 1)
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T1, T2, ST, S || D, DI, Sh2, Sh1||
DIETZGEN (USA) Vector Type Log Log
No. N1725 Micromatic (Variation 2)
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T1, T2, ST, S || D, DI, K||
DIETZGEN (USA) Vector Type Log Log
No. 1725N Micromatic (Variation 3)
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T1, T2, ST, S || D, DI, K||
DIETZGEN (USA) Vector Type Log Log
No. N1725 Microglide
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| || Th, K, A || B, T1, T2, ST, S || D, DI, K||
DIETZGEN (USA) Vector Type Log Log
No. B-1725 (Made in Japan)

PHOTO
|| Th, Sh2, Sh1, A || B, T<45°&T<45°, T>45°&T>45°, ST, S&S || D, DI, K|| || LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1||
DIETZGEN (USA) Vector Type Log Log
No. B-1725? (Made in USA)

PHOTO
|| Th, Sh2, Sh1, A || B, T<45°&T<45°, T>45°&T>45°, ST, S&S || D, DI, K|| || LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1||
DING FENG (China)
Slide Rule has no ID No. or name on it; Box has No. 5471

PHOTO
|| 2D, L, K, A || Tan&Cot, Sin&Cos, H', CI, C || D, Th, Sh1, Sh2 || CF and DF are folded at √10 || LL1I, LL2I, LL3I, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1||
DING FENG (China)
No. 5471 Duplex Vector
|| 2D, L, K, A || Tan&Cot, Sin&Cos, H', CI, C || D, Th, Sh1, Sh2 || CF and DF are folded at √10 || LL01, LL02, LL03, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1||
DING FENG (China)
No. 5571
|| 2D, L, K, A || Tan&Cot, Sin&Cos, H', CI, C || D, Th, Sh1, Sh2 || CF and DF are folded at √10 || LL1I, LL2I, LL3I, DF || CF, CIF , H, CI, C || D, LL3, LL2, LL1||
DING FENG (China)
No. 5651
|| 2D, L, K, A || Sin&Cos, H',Tan&Cot, CI, C || D, Th, Sh1, Sh2 || CF and DF are folded at √10 || LL1I, LL2I, LL3I, DF || CF, CIF , H, CI, C || D, LL3, LL2, LL1||
DING FENG (China)
No. 5810
|| LL1I, LL2I, LL3I, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1||CF and DF are folded at √10 || Th, L, K, A || B, S&S, H', T&T, C || D, DI, Sh2, Sh1 ||
DING FENG (China)
No. 5852
ECKEL (The Eckel Co., USA)
Engineer's Log Log (Circular Slide Rule)
|| LL1, LL2, LL3, LL4, C || D, DI, A, K, L || Scales are printed on cursor || SH1, SK2, TH, D, ST, S, T < 45°, T > 45° || Scales are printed on cursor
FABER-CASTELL (Germany)
Mathema No. 2/84

PHOTO
Left Front: (eXg),tan xg,sqrt(X2-1),sqrt X, || sqrt X, (1 / sqrt X), 1/y, y || Y, sqrt( 1 - X2), sin Xg, (eX) ||
Right Front: || gln Y, gtanY, sqrt(1 + Y2), Y2 || y2, 1/y2, 1/y, y || Y, sqrt(1 - Y2), gsinY, (lnY) ||
Left Back: || -0.1 lnX, -lnX, -10 ln X || tanh xg, 0.1 cosh xg, 0.1 sinh xg, sinh xg || 10 ln X, lnX, 0.1 lnX ||
Right Back: || e-10Y, e-Y, e-0.1Y || gtanh y, gcosh 10y, gsinh 10y, gsinh y || e0.1Y , eY, e10Y ||
FABER-CASTELL (Germany)
Mathema No. 2/84N

PHOTO
Left Front: (eXg),tan xg,sqrt(X2-1),sqrt X, || sqrt X, (1 / sqrt X), 1/y, y || Y, sqrt( 1 - X2), sin Xg, (eX) ||
Right Front: || gln Y, gtanY, sqrt(1 + Y2), Y2 || y2, 1/y2, 1/y, y || Y, sqrt(1 - Y2), gsinY, (lnY) ||
Left Back: || 10 ln X, ln X, 0.1 ln X, Y || y, 0.1 cosh xg, 0.1 sinh xg, sinh xg || tanh xg, -0.1 ln X, -ln X, -10 ln X ||
Right Back:|| e0.1Y, eY, e10Y , Y || y, gcosh 10y, gsinh 10y, gsinh y || gtanh y, e-10Y , e-Y, e-0,1Y ||
FABER-CASTELL (Germany)
989 Complex Hyperbolic Function Calculator
FLYING FISH (China)
No. 1002

PHOTO
|| Ln1I, Ln2I, Ln3I, DF || CF, CIF, H2, H3, CI, C || D, Ln3, Ln2, Ln1|| CF is folded at √ 10 || sh2, sh3, K, A || B, sin2cos2, H'2, tg2ctg2, tg3ctg3, C || D, DI, lg, th2 ||
FLYING FISH (China)
No. 1003

PHOTO
|| lnI-2, lnI-1, lnI0, lnI1, DF || CF, CIF, H0, H1, H'0, CI, C || D, ln1, ln0, ln-1, ln-2 || CF is folded at √ 10 || sho, sh1, cu1, cu2, cu3 || lq1-1, tgoctgo, tg1ctg1, tg2ctg2, sinocoso, srt-1cos-1ctg-1, C || D, sqi2, sq1, tho, ch1 ||
FLYING FISH (China)
No. 1004

PHOTO
|| Th, Ch, K, A || B, T&T, ST&ST, S&S, C || D, DI, Sh2, Sh1 || CF and DF are folded at π || LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1||
FLYING FISH (China)
No. 1009

PHOTO
|| Sh1, Sh2, K, A || B, T&T, ST, S&S, C || D, DI, P, Th || CF is folded at √ 10 || LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1||
FLYING FISH (China)
No. 1012
|| sh0X, sh1X, (3√X)1, (√X)2 || (√X)1 , √(1-X2)-1 , s-1 t-1 t-1 cos-1 ctg-1, tgoX ctgoX, (√1-X2)o , sinoX cosoX , Y2 || Y1, Y2I , ch1X , thoX , (ex)1 || || ln-2X , ln-1X, lnoX , ln1X , Y2F || Y1F , Y1FI , (10x)1 , (√ X2-1)1 , (√ X2-1)o , Y1I , Y2 || Y1 , ln1X , lnoX , ln-1X , ln-2X ||
FLYING FISH (China)
No. 1015 and 1015-1

PHOTO
|| Sh1, Sh2, K, A || B, T&T, ST, S&S, C || D, DI, L, Th || CF is folded at √ 10 || LL/1, LL/2, LL/3, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1||
FLYING FISH (China)
No. 1018 Electricians slide rule ( See Shanghai China No. 1018)

PHOTO
|| Θ°, RΘ, P', P || Q, QI, L, I || J, J', T, GΘ || This has Gudermannian scales., and is not folded. || lnI-1, lnI0, lnI1, K1, A1 || B1, tgoctgo,sinocoso, C || D, DI, ln, ln0, ln-1 ||
FLYING FISH (China)
No. 1200

PHOTO
|| lnI-1, lnI0, lnI1, DF || CF, CIF, sinocoso, H'0, CI, C || D, ln1, ln0, ln-1 || CF is folded at √ 10 || sho, sh1, K, A || B, srt-1cos-1ctg-1, tgoctgo, tg1ctg1, tg2ctg2, C || D, lg-1, tho, ch1 ||
FLYING FISH (China)
No. 6006 Electrical Engineering Slide Rule
|| db, Neper, Volt, Dynamo, A || B, T&T, S&S, C || D, K, P, L || CF is folded at π || Sh1, Sh2, Th, Ch, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 ||
FLYING FISH (China)
No. 6201
|| L, K, A || B, T&T, ST, S&S || D, Sh2, Sh1, Th || CF and DF are folded at π || LLo1, LLo2, LLo3, DF || CF, CIF, CI, C || D, LL3, LL2, LL1||
Gong Si He Ying (China)
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| CF is folded at π || Sh1, Sh2, Th, A || B, T&T, SRT, S&S || D, DI, LL01, LL1 ||
GRAPHOPLEX (France)
Neperlog Hyperbolic No. 691

PHOTO
|| L, P, Ch, A || B, T<45° & T<45°, ST & ST, S & S, C || D, Th, Sh2, Sh1 || || LL01, LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 ||
GRAPHOPLEX (France)
Neperlog Hyperbolic No. 691a

PHOTO
|| L, P, Ch, A || B, T<45° & T<45°, ST & ST, S & S, C || D, Th, Sh2, Sh1 || || LL01, LL02, LL03, DF || CF, CIF, K, CI, C || D, LL3, LL2, LL1 ||
HAIOU PAI (China)
No. 6531

PHOTO
|| LL01, LL02, LL03, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1|| CF is folded at π || Th, K, A || B, T&T, ST, S&S, C || D, DI, Sh2, Sh1 ||
HAIOU PAI (China)
No. 6631
HAIOU PAI (China)
No. 6681 Haiou (Seagull)
|| LL01, LL02, LL03, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1|| CF is folded at π || L, Sh1, Sh2, A || B, T&T, ST, S&S, C || D, P, Th, Ch ||
HANGZHOU JIANG SHI YI XING (China)
No Number
HEMMI (Japan)
Duplex Slide Rule No. 153 (For Electrical Engineer)

PHOTO
|| L, K, A || B, CI, C || D, T, GΘ || Note: This is the first slide rule sold with Gudermannian hyperbolic scales. || Θ, R Θ, P || Q, Q', C || LL3, LL2, LL1 ||
HEMMI (Japan)
Duplex Slide Rule No. 154 (For Advanced Electrical Engineer)

PHOTO
|| DF, P' , P || Q, CF, CI, SΘ0 || A, D, K || || Sx, Tx, TΘ0, TΘ0 || Th, Sh, Sh, C || D, L, Χ ||
HEMMI (Japan)
Duplex Slide Rule No. 155 (For Advanced Electrical Engineer)
|| K, A, DF || CF, B, CI, C || D, L || is folded at √10 ||Sh1, Sh2, Th1 || TI1&TI1, TI2&TI2, SI1&SI1, C || D, DI ||
HEMMI (Japan)
Duplex Slide Rule No. 255 (For Expert Electrical Engineer) Version 1

PHOTO
|| L, K, DF || CF, CIF, CI, C || D, X , Θ || NOTE: X is radians and Θ is degrees. ||Sh1, Sh2, Th, A || B, TI2, TI1, SI, C || D, LL3, LL2, LL1 ||
HEMMI (Japan)
Duplex Slide Rule No. 255 (For Expert Electrical Engineer) Version 2

PHOTO
|| L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || ||Sh1, Sh2, Th, A || B, TI2, TI1, SI, C || D, X, Θ|| NOTE: X is radians and Θ is degrees.
HEMMI (Japan)
Duplex Slide Rule No. 255D (For Expert Electrical Engineer)

PHOTO
|| L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || ||Sh1, Sh2, Th, A || B, TI2&TI2, TI1&TI1, SI&SI, C || D, DI, X, Θ || X is radians; Θ degrees.
HEMMI (Japan)
Duplex Slide Rule No. 266 ("ELECTRONICS")
|| LL03, LL02, LL2, A || B, BI, Sh1, Sh2, Th, CI, C || D, DI, P, L || ||XL, Xc, F, r1 || r2, ST, S&S, T&T, L || Cf/C, Cz, L, Z, Fo || Some of these Back Scales are multiple scales.
HEMMI (Japan)
Duplex Slide Rule No. 266 ("ELECTRONICS")

PHOTO
|| LL3, LL1, LL2, LL2, A || B, BI, CI, C || D, dB/L , S&S, T&T|| ||XL, Xc, F, r1 || r2, L, Cf/C, Cz || L, Z, fo || Some of these Back Scales are multiple scales.
HEMMI (Japan)
Duplex Slide Rule No. 275 (For Advanced Electrical Engineer) Version 1
|| L, K, DF || CF, CIF, CI, C || D, X , Θ || NOTE: X is radians and Θ is degrees. ||Sh1, Sh2, Th, A || B, TI2, TI1, SI, C || D, LL3, LL2, LL1 ||
HEMMI (Japan)
Duplex Slide Rule No. 275 (For Advanced Electrical Engineer) Version 2
|| L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || ||Sh1, Sh2, Th, A || B, TI2, TI1, SI, C || D, X , Θ || X is radians; Θ degrees.
HEMMI (Japan)
Duplex Slide Rule No. 275D (For Advanced Electrical Engineer)

PHOTO
|| L, K, DF || CF, CIF, CI, C || D, LL3, LL2, LL1 || ||Sh1, Sh2, Th, A || B, TI2&TI2, TI1&TI1, SI&SI, C || D, DI, X, Θ || X is radians; Θ degrees.
I-J Slide Rule (China)
No Number
I-J Slide Rule (China)
JIANG (China)
No. 6171 PAT 129 Jiangshi Type B. Designed by Jiang Dequ 1940
||LL1, CU, (T)&(T) || B,S&S,SH,CI,C || D, LL2, LL3||LL1, L, CT || B, CS, TH, C || D, LL2, LL3 ||
KEUFFEL & ESSER (USA)
Log Log Vector No. 4093-3

PHOTO
|| L, LL0, DF || CF, B, CI, C || D, LL3, LL2|| Note: This is the first slide rule sold with hyperbolic scales. || Sh1, Sh2, Th || SI1&SI1, SI2&SI2, TI&TI || D, S, T || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Vector No. 4093-5

PHOTO
|| L, LL0, DF || CF, B, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th || SI1&SI1, SI2&SI2, TI&TI || D, S, T || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3

PHOTO
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site.
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || L, LL01, LL1, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3S

PHOTO
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || L, LL01, LL1, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3

PHOTO
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-3

PHOTO
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, SRT, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 68 1434 & 68 1439 (4083-3)
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-5
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-5
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || L, LL01, LL1, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. N4083-5
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || L, LL01, LL1, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. N4083-5
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-5
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 4083-5
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 68 1424 & 68 1429 (4083-5)
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, ST, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
Log Log Duplex Vector No. 68 1434

PHOTO
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2|| || Sh1, Sh2, Th, A || B, T&T, SRT, S&S || D, DI, LL01, LL1 || See C.M. - K&E Catalogs site
KEUFFEL & ESSER (USA)
KeLon (This 10 in. Rule was designed, but not produced)
|| Ln-3, Ln-2, Ln-1, Ln-0, DF || CF, CIF, L, CI, C || D, Ln0, Ln1, Ln2, Ln3 || Constants, Sh1, Sh2, Th, A || B, T1&T1, SRT, SI2&SI2, C || D, DI, K, Sq1, Sq2 ||
LAFAYETTE (USA / JAPAN San - AI Group)
VECTORLOG No. F - 686

PHOTO
|| Tr1, Tr2, P', P || Q, ST, Sr, S°, C || D, LLo3 LLo2, Llo1 || Note: LL1' is at end of C; Sr is radians; S° is in degrees. || Sh1, Sh2, DF, A || B, CF, Th, CI, C || D, LL3, LL2, db || Note: db is 20 lg x
LAFAYETTE (USA / JAPAN San - AI Group)
VECTORLOG No. 99-7102

PHOTO
|| Tr1, Tr2, P', P || Q, ST, Sr, S°, C || D, LLo3 LLo2, Llo1 || Note: LL1' is at end of C; Sr is radians; S° is in degrees. || Sh1, Sh2, DF, A || B, CF, Th, CI, C || D, LL3, LL2, db || Note: db is 20 lg x
LAFAYETTE (USA / JAPAN San - AI Group)
VECTORLOG No. 99-71029

PHOTO
|| Tr1, Tr2, P', P || Q, ST, Sr, S°, C || D, LLo3 LLo2, Llo1 || Note: LL1' is at end of C; Sr is radians; S° is in degrees. || Sh1, Sh2, DF, A || B, CF, Th, CI, C || D, LL3, LL2, db || Note: db is 20 lg x
LUTZ ( JAPAN / USA)
No. 300 B

PHOTO
|| Sh1, Sh2, Th, A || B, T&T, ST&ST, S&S, C || D, DI, P, K || || LL1, LL2, LL3, DF || CF, CIF, L, CI, C || D, LL3, LL2, LL1||
MICRONTA (JAPAN)
No. 157

PHOTO
|| Sr, S°, P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; S° is in degrees. || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lg x
MICRONTA ( JAPAN San - AI Group)
No. 1157 Electric Vector
|| Sr, S° & , P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is in radians; S° is in deg. || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lg x
NIKKEI (JAPAN Nippon Slide Rule Co.)
NIKKEI 520 Duplex
|| L, K, DF || CF, CIF, CI, C || D, X, Θ || Note: X is radians; Θ degrees || Sh1, Sh2, Th, A || B, T, S, ST, C || D, LL1, LL2, LL3 ||
Paper Slide Rule (CHINA)
No Number and unknown Name
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| Very crudely made - scales are all black color. CF folded at π || LL0, LL00, A || B, T, ST, S || D, Th, Sh2, Sh1|| Similar to K&E 4083-3 (1939-1946) See 54
PATRICK Corp/ (USA)
MARK IV data log

PHOTO
|| K, odd √ , even √ , A || B, T & T, ST, S & S, C || D, DI, Th, Sh2, Sh1|| ||LL0 +, LL0 -, LL1 +, LL1 -, DF || CF, CIF, L, CI, C || D, LL2 +, LL2 -, LL3 +, LL3 - ||
PICKETT & ECKEL (USA)
4 Deci - Log Log Vector Hyperbolic

PHOTO
|| 1/N1, 1/N2, 1/N3, 1/N4, DF || CF, Th, Sh, Sh, CI, C || C0 & D, N1, N2, N3, N4 || ||Three cube root scales 3 √, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ ||
PICKETT & ECKEL (USA)
4 Deci - Log Log Vector Hyperbolic

PHOTO
|| N1,1/N1, N2, 1/N2, DF/M || CF/M, Th, Sh, Sh, CI, C || D, N3, 1/N3, N4, 1/N4 || ||Three cube root scales 3 √, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ ||
PICKETT & ECKEL (USA)
No. 4 Vector Hyperbolic Log Log
||Three cube root scales 3 √, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || 1/N1, 1/N2, 1/N3, 1/N4, DF/M || CF/M, Th, Sh, Sh, CI, C || C0 & D, N1, N2, N3, N4 ||
PICKETT & ECKEL (USA)
4-T Dual-Base Log Log (Vector Hyperbolic)

PHOTO
||Three cube root scales 3√, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
4-T Dual-Base Log Log Reciprocal Scale (Vector Hyperbolic)

PHOTO
||Three cube root scales 3√, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF || CF, Th, Sh&Sh, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
4-T Dual-Base Log Log (Vector Hyperbolic) SYNCHRO SCALE

PHOTO
||Three cube root scales 3√, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF || CF, Th, Sh&Sh, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
4-T LOG LOG Vector Hyperbolic Dual-Base SPEED RULE
||Three cube root scales 3√, DF|| CF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF || CF, Th, Sh&Sh, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
N4-T Vector - Type LOG LOG Dual - Base Speed Rule

PHOTO
||Three cube root scales 3√ , DF || CF, CIF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
N4-ES Vector - Type LOG LOG Dual - Base Speed Rule

PHOTO
||Three cube root scales 3√ , DF || CF, CIF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
N4-T Vector - Type LOG LOG Dual - Base Speed Rule
||Three cube root scales 3√ , DF || CF, CIF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
N4p-T Vector - Type LOG LOG Dual - Base Speed Rule

PHOTO
||Three cube root scales 3√ , DF || CF, CIF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
8 - T McGann Variable Density Flow Computer (Magnesium Model)
|| Pt/P, Tt/T, λ, M, J4, J3 || λ4, λ3, λ2, λ1, λ0 || J2, J0-1&M, λ, Tt/T, Pt/P || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
8 - T McGann Variable Density Flow Computer (Magnesium Model)

PHOTO
|| Pt/P, Tt/T, λ, M, J4, J3 || λ4, λ3, λ2, λ1, λ0 || J2, J0-1&M, λ, Tt/T, Pt/P || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
PICKETT & ECKEL (USA)
N16-ES ELECTRONIC LOG LOG Dual - Base Speed Rule

PHOTO
|| SH1, SH2, TH, DF || CF, L, S&S, ST, T&T, CI, C || D, LL3, LL2, LL1, Ln || || θ & θ, db & db, D or Q, XL, Zs OR Xc || C or L, F, λ, ω, τ, τR' or X'c, Cr || Lr, db & db, COS Q & COS Q, t'C or C' || (NOTE: Both the tR' or X'c and the t'C or C' scales include numerous sub-scales for solving electronic calculations).
PICKETT & ECKEL (USA)
X-4 Vector - Type LOG LOG Dual - Base Speed Rule

PHOTO
||Three cube root scales 3√ , DF || CF, CIF, T&T, ST, S&S, CI, C || D, DI, Two sqrt scales √ || || LL1&LL1, LL2&LL2, DF/M || CF/M, Th, Sh&Sh, Ln, L, CI, C || D, LL3&LL3, LL4&LL4 ||
POST (USA)
Log Log Vector Model No. 1460
POST (USA)
Log Log Vector Model No. 1461

PHOTO
|| L, K, A || B, CI, C || D, T, Gθ || Note: has Gudermannian hyperbolic scales. || θ, Rθ P || Q, Q', C || LL3, LL2, LL1 ||
PRECISION SCALE (USA)
1751 Log Log 10 Hyperbolic
|| K, L, DIF, DF || CF, CIF, Two sqrt scales √ (odd & even), CI, C || D, DI, TH, SH1, SH2 || || LL1, LL2, LL3, LL4, A || B, S&S, ST&ST, T&T, CI, C || D, LL/1, LL/2, LL/3, LL/4 ||
PRECISION SCALE (USA)
1752 Log Log e Hyperbolic
|| Sh1, Sh2, Th, A || B, T&T, ST, S&S, CI, C || D, DI, K, L || ||LL/0, LL/1, LL/2, LL/3, DF || CF, CIF, Two sqrt scales √ (odd & even), CI, C || D, LL3, LL2, LL1, LL0||
QUIFAN (CHINA)
No Model No.
REISS (East Germany)
Duplex Model 3227

PHOTO
|| LL00, LL01, LL02, LL03, DF || CF, CIF, BI, CI, C || D, LL3, LL2, LL1, LL0 || || K, T1, T2, DI, A || Sh1, Sh2, Th, SZ ,C || D, SK, P, ST, L ||
REISS (East Germany)
Duplex Model 3227

PHOTO
|| LL00, LL01, LL02, LL03, DF || CF, CIF, BI, CI, C || D, LL3, LL2, LL1, LL0 || || K, T1, T2, DI, A || Sh1, Sh2, SZ ,C || D, SK, P, ST, L ||
RELAY (Japan San - Ai Group)
No. 157

PHOTO
|| Sr, Sθ, P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; Sθ is deg. || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db ||r %Note: db is 20 lg x
RELAY (Japan San - Ai Group)
No. 158

PHOTO
|| Sh2, Sh1, Th, A || BI, S, T, CI, C || D, DI, LL3, LL2, LL1 || || X2, X1, P2, P1 || Q, Y, L, LX, I || I, Lθ1 & Lθ1,Lθ2 & Lθ2 , LY ||
RELAY (Japan San - Ai Group)
No. 159
RELAY (Japan San - Ai Group)
No. De 1008
|| Sh2, Sh1, Th, A || BI, S, T, CI, C || D, DI, LL3, LL2, LL1 || || X2, X1, P2, P1 || Q, Y, L, LX, I || I, Lθ1 & Lθ1,Lθ2 & Lθ2 , LY ||
RELAY (Japan San - Ai Group)
No. De 1008

PHOTO
|| Sh2, Sh1, Th, A || BI, S, T, CI, C || D, DI, LL3, LL2, LL1 || LL0, L, K, A || B, S, ST, T, C || D, DI, P, LL0
RICOH (Japan San - Ai Group)
No. 157
|| Sr, Sθ, P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; Sθ is degrees. || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lgx
RICOH (Japan San - Ai Group)
No. 158
|| Sh2, Sh1, Th, A || BI, S, T, CI, C || D, DI, LL3, LL2, LL1 || || X2, X1, P2, P1 || Q, Y, L, LX, I || I, Lθ1 & Lθ1,Lθ2 & Lθ2 , LY ||
RICOH (Japan San - Ai Group)
No. 159
|| LL-1, LL-2, LL-3, A || B, BI, K, CI, C || D, LL3, LL2, LL1 || Note: A number of the scales are extended. || Sh1, Sh2, P2, P1 || Q, Sr, Sθ&, Th, C || D, T2, T1, L || Note: Sr is radians; Sθ is degrees
RUYI (Chinese Shanghai)
No. 1002
|| Ln1I, Ln2I, Ln3I, DF || CF, CIF, H2, H3, CI, C || D, Ln3, Ln2, Ln1|| CF is folded at √10 || sh2, sh3, K, A || B, sin2cos2, H'2, tg2ctg2, tg3ctg3, C || D, DI, lg, th2 ||
RUYI (Chinese Shanghai)
No. 1009
RUYI (Chinese Shanghai)
No. 1015-1
|| LL/1, LL/2, LL/3, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1|| CF is folded at √10 || Sh1, Sh2, K, A || B, T&T, ST, S&S, C || D, DI, L, Th ||
RUYI (Chinese Shanghai)
No. 1083
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| CF and DF are folded at π || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1|| Similar to K&E 4083-3 See 54
RUYI (Chinese Shanghai)
No. 6201
|| L, K, A || B, T&T, ST, S&S, C || D, Sh2, Sh1, Th || || LLo1, LLo2, LLo3, DF || CF, CIF, CI, C || D, LL3, LL2, LL1|| CF and DF are folded at π
SCIENTIFIC INSTRUMENT COMPANY (SIC) (USA)
Electro-Vector Log-Log No. 1570
|| Sr, Sθ & , P', P || Q, CF, CI, C || D, DF, LL2, LL3 || Note: LL1' is at end of C; Sr is radians; Sθ is deg. || Sh2, Sh1, A || B, K, Th, C || D, Tr1, Tr2, db || Note: db is 20 lgx
SCIENTIFIC INSTRUMENT COMPANY (SIC) (USA)
Electro Hyper-Vector Log-Log No. 1580
|| Sh2, Sh1, Th, A || BI, S&S, T&T, CI, C || D, LL3, LL2, LL1 || || X2, X1, P2, P1 || Q, Y, L, LX, I || I, Lθ1 & Lθ1,Lθ2 & Lθ2 , LY ||
SHANGHAI (China)
No. 1002
SHANGHAI (China)
No. 1015-1
SHANGHAI (China
Electricians Slide Rule No. 1018
SHANGHAI (China)
I-J Function Slide Rule
|| ±G, ±Ii1, Im, 1/3X || 1/3X, ±J1, Jm & Jm, C || D, LL3, LL2, LL1, L || || Th, Ch, K, A || B, T&T, ST&ST, S&S, C || D, DI, Sh2, Sh1 || (SHANGHAI is imprinted on Cursor)
SHANGHAI (China)
No. 5891
SIDA (China)
No. 1
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1||
SIDA (China)
No. 1002
|| Ln1I, Ln2I, Ln3I, DF || CF, CIF, H2, H3, CI, C || D, Ln3, Ln2, Ln1|| CF is folded at √10 || sh2, sh3, K, A || B, sin2cos2, H'2, tg2ctg2, tg3ctg3, C || D, DI, lg, th2 ||
SIDA (China)
No. 1009
SIDA (China)
No. 1012
SIDA (China)
No. 1015
|| LL/1, LL/2, LL/3, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1|| CF is folded at √10 || Sh2, Sh1, K, A || B, T&T, ST, S&S, C || D, DI, L, Th ||
SIDA (China)
No. 1015
|| LL/1, LL/2, LL/3, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1|| CF is folded at √10 || Sh2, Sh1, K, A || B, T&T, ST, S&S, C || D, DI, L, Th ||
SIDA (China)
No. 1083

PHOTO
|| L, LL1, DF || CF, CIF, CI, C || D, LL3, LL2|| CF and DF are folded at π || LL0, LL00, A || B, T&T, ST, S&S || D, Th, Sh2, Sh1||
SIDA (China)
No. 5810
|| LL1I, LL2I, LL3I, DF || CF, CIF, H, CI, C || D, LL3, LL2, LL1|| CF and DF are folded at √10 || Th, L, K, A || B, S&S, H', T&T, C || D, DI, Sh2, Sh1 ||
SIDA (China)
No. 6171
|| Ln1I, Ln2I, Ln3I, DF || CF, CIF, H2, H3, CI, C || D, Ln3, Ln2, Ln1 || CF is folded at √10 || sh2, sh3, K, A || B, sin2cos2, H'2, tg2ctg2, tg3ctg3, C || D, DI, lg, th2 ||
SIDA (China)
No. 6201
|| L, K, A || B, T&T, ST, S&S, C || D, Sh2, Sh1, Th || CF and DF are folded at π || LLo1, LLo2, LLo3, DF || CF, CIF, CI, C || D, LL3, LL2, LL1||
TAMAYA (Japan)
No. 4499
U. S. BLUEPRINT (USA/HEMMI)
No. 1893 Duplex Slide Rule (For Electrical Engineer)
XUESH (China)
6171 bachelor
XUESH (China)
6171
|| lgln1I, lgln2I, lgln3I, DF || CF, CIF, H1, H2, CI, C || D, lgln3, lgln2, lgln1|| CF is folded at √10 || sh1, sh2, K, A || B, sin&cos, H1 tg1&ctg1, tg2&ctg2, C || D, DI, lg, th ||
XUESHI (China)
1572-K3
|| LL02, LL03, DF || CF, CIF, CI, C || D, LL3, LL2 || || Sh1, Sh2, Th, A || B, T, SRT, S || D, DI, LL01, LL1||