 P146 Blundell-Luton TypeP8 |
Blundell-Luton TypeP8 (c1947-49) Made in England - Bakelite and paper veneer construction Front Scale A [ B, CI, C ] D Back: Conversions |
 REF Blundell Type G1 |
Blundell Type G1 (c.1947) Made in England - Blundell's first slide rule model Stock made of black Bakelite with laminated scales Front Scale K, A [ B, Reciprocal(CI), C ] D, L Back : Blank |
 S367 BRL Students Type-1 |
BRL Students Type-1 (c.1950's) Made in England - Stock made of Astrolon Note: the BRL text was scratched out of the logo Front Scale K, A [ B, R, C ] D, M Back: Simple instructions Multiple hairlines |
 S092 Blundell Harling 803 |
Blundell Harling 803 Made in England Front Scale L, K, A [ B, CI, C ] D, S, T, ST Back: Blank Multiple hairlines Original Owner/Location: NIB/England |
 S347 Blundell Harling 904 Academy |
Blundell Harling 904 Academy Made in England Front Scale ST, A [ B, CI, C ] D, S, T Back Scale: K, L, DF [ CF, CIF, C ] D, LL2, LL3 Multiple hairlines Original Owner/Location: NIB/England Note: (per David M. Riches, UK) This appears to have been made using the school series S143-10 blank which is narrower than the 800 series blank, but still part of the 'Academy' series. |
 ISRM Blundell Harling S143-20 |
Blundell Harling S143-20 Made in England Front Scale K, A [ B, CI, C ] D, L Back Scale: Blank Multiple hairlines Donated by David Hecht,Alexandria, VA |
 S214 BRL G29 - Students Model |
Blundell Rules Ltd. G29 Made in England, Luton Beds - Pat. No. 644944 Front Scale (extended) 10in // A [ B, R, C ] D Back Side: [ S1 cos, L, T ctg ] 26cm Back Adv: The British Inst. Of Engineering Technology |
 S237 BRL Academy 304 Darmstadt |
BRL Academy 304 Darmstadt Made in England - Blundell Rules Ltd. Front Scale L, K, A [ B, CI, C ] D, P, S, T Back Scale: [ L1, L2, L3 ] Original Owner: P. Burt/England, England |
 S359 Blundell Omega 401 Rietz |
Blundell Omega 401 Rietz Made in England Front Scale 11in // K, A [ B, CI, C ] D, L Back Slide: [ S, S&T, T ] Original Owner: D.H. Carpenter, England |
 ISRM Blundell Omega 405 Basic |
Blundell Omega 405 Basic Made in England Front Scale 11in // A [ B, C ] D Back: Blank Donated by David Hecht,Alexandria, VA |
 ISRM Blundell Omega 602 Log-Log |
Blundell Omega 602 Log-Log Made in England Front Scale 6in // LL2, A [ B, CI, C ] D, LL3 Back Slide: [ S, S&T, T ] Donated by David Hecht, Alexandria, VA |
 P166 Blundell 604 Electro |
Blundell 604 Electro (Omega Series) Made in England Front Scale 6in // LL2, A(Kw) [ B, CI, C ] D, LL3 Well: Voltage Drop, Gen Eff/Mot Eff, Gen/Mot Back Slide: [ S, L, T ] Back Adv: Northern Electric Orig Owner: H.A. Ashton |
 P049 Blundell Omega 606 |
Blundell Omega 606 Made in England Front Scale 6in // A [ B, CI, C ] D Back Slide: [ S, S&T, T ] Back Adv: Dustraction Ltd. Leicester |
 ISRM Blundell Harling Classmate 812-1 |
Blundell Harling Classmate 812-1 Made in England Front Scale S, T, A [ B, CI, C ] D, K, L Back Scale: Blank Multiple hairlines Donated by David Hecht,Alexandria, VA |
 ISRM Blundell Harling Classmate 813 |
Blundell Harling Classmate 813 Made in England Front Scale S, T, A [ B, CI, C ] D, K, L Back Scale: Blank Multiple hairlines Donated by David Hecht,Alexandria, VA |
 REF Blundell Omega 909 Left-handed |
Blundell Omega 909 Left-handed Reversed scales (compare with Blundell 606) Made in England (c.1970) Front Scale 6in // A [ B, C, C ] D Back Slide (not verified): [ S, S&T, T ] Archive - Ron Manley collection |
 REF BRL S100 |
Blundell Rules Ltd S100 Made in England Front Scale (extended) A [ B, C ] D Back Adv: Pirelli General (tire) Archive - Chris Gillings collection |
 REF BRL S101 |
Blundell Rules Ltd S101 Made in England Front Scale (extended) 6in // Cube(K), A [ B, Rec (CI), C ] D Man.(L) Back: Unknown Archive - Peter Owen collection (England) |
 P155 Donkin S101 |
Donkin S101 (circa 1977) Made in England by BRL for Donkin and Company Ltd (Marine Steering Eng) Front Scale: 6inch // Cube, A [ B, Rec, C ] D, Man Back: Blank 
|
 P022 BRL P19 |
Blundell Rules Ltd P19 Made in England Front Scale 6inch // A [ B, REC, C ] D Back: 15cm, Adv: Automatic Telephone and Electric Co, Ltd. Original Owner/Location: Unk/England |
 P007 BRL Advergi |
Blundell Rules Ltd Advergi Made in England Front Scale 13cm // A [ B, CI, C ] D, K || 5inch Back Slide: [ S, L, T] Original Owner/Location: Unk/England |
Boots
Ringplan S349 Boots Ringplan (Mannhiem) |
Boots Ringplan (Mannhiem) Made in Japan for Boots Ringplan Pharmacy Chain Front Scale 25cm, A [ B, CI, C ] D, K Back Scale: [ S, L, T ] Original Owner/Location: Unk/England  Manual 8.48Mb |
 S432 Boots Ringplan Precision Log Log |
Boots Ringplan Precision Log Log Made in Japan for Boots Ringplan Pharmacy Chain Front Scale LL3, LL2, LL1, A [ B, BI, CI, C ] D, DI, K, LL0 Back Scale: [ T2, T1, L, S ] Original Owner/Location: Unk/England |
 S294 Boots Ringplan Standard |
Boots Ringplan Standard Made in Japan for Boots Ringplan Pharmacy Chain Front Scale 25cm // A [ B, CI, C ] D, K \\ 10in Back Scale: [ S, L, T ] Original Owner/Location: Unk/England |
 P165 Boots Ringplan Standard pocket |
Boots Ringplan Standard pocket Made in Japan for Boots Ringplan Pharmacy Chain Front Scale 13cm // A [ B, CI, C ] D, K \\ 5in Back Scale: [ S, L, T ] Original Owner/Location: Unk/England |
 P235 Boots Ringplan Standard pocket |
Boots Ringplan Standard pocket Made in Germany for Boots Ringplan Pharmacy Chain Front Scale 13cm // K, A [ B, CI, C ] D, L \\ 5in Back Scale: [ S, ST, T ] Original Owner/Location: Unk/England |
 P217 Classic Series 1 Pocket |
Classic Series 1 Pocket Made in England Front Scale 5inch // A [ B, C ] D || 13cm Back: Conversions Original Owner/Location:Unk/England |
 S270 Classic Series 1 |
Classic Series 1 Made in England Front Scale 10inch // A [ B, C ] D || 26cm Back: Conversions Original Owner/Location:Unk/England |
 P012 Classic Series II |
Classic Series II Made in England Front Scale 5inch // UL, A [ B, C ] D, L || 13cm Back: Conversions Original Owner/Location: G. McVittie/England |
 S425 Classic Log-Log |
Classic Log-Log Made in England Front Scale 10inch // UL, A [ B, S, T, C ] D, L || 26cm Back: Conversions Original Location: England |
Theodore Farmar
 Farmar's Profit-Calculating Rule |
Farmar's Profit-Calculating Rule Made in England - Business Slide rule Roller: Slide: Archive - Scan by Nathan Zeldes, Israel. |
 S282 Jakar 29 Student Log/Log |
Jakar 29 Student Log/Log Made in Japan by Fuji for British Market Front Scale L, K, A [ B, CI, C ] D, S, ST, T Back Scale: 25cm [ S, LL2, LL3 ] 10in Original Owner/Location: Unk/England |
 ISRM Jakar 29 Student Log/Log |
Jakar 29 Student Log/Log Made in Japan by Fuji for British Market Front Scale L, K, A [ B, CI, C ] D, S Cos, ST, T Cot Back Scale: 25cm [ S, LL2, LL3 ] 10in Donated by David Hecht, Alexandria, VA |
 S348 Jakar 66 Electro |
Jakar 66 Electro Made in Japan by Fuji for British Market Front Scale 10in // K, E (Volt/Dynamo/Motor Efficiency), A(kw) [ B(PS), CI, C ] D, LL3, LL2, L Back Scale: [ S cos, ST, T cot ] Cursor: Multiple Hairlines Original Owner/Location: Unk/England Manual 8.48Mb |
 P237 Jakar 523A |
Jakar 523A Made in Japan by Fuji for British Market - c1970 Front Scale 13cm // A [ B, CI, C ] D, K, 5in Back Scale:[ S, LL2, LL3 ] Original Owner/Location: Unk/England |
 S537 Norton & Gregory Ltd |
Simplon Primary Made in Japan for N&G (by ?) 25cm divided scales, extruded aluminum cursor 10in // A [ B, CI, C ] D || 28cm Well: Extended 60cm scale Back scale: S, L, T Back: Equivalents Original Owner/Location: Unk/ England |
 Otis King Model K Cylindrical |
Otis King Model K Cylindrical Made in England - 66 inch scales Serial number: S1117 Scales: 423 and 414 Archive - No Longer in Collection |
 ISRM Ratcliffe's Spring Calculating Slide Rule |
Ratcliffe's Spring Calculating Slide Rule Made in England (Possibly by Unique) - For designing coil springs Designed by F.S. Ratcliffe for Crawford Spring Works, Rochdale, England Front Scale: D [d, dc, w ] f, D1 [ d1, R ] N Note: scales references on this slide rule are not the same as generic scales Scale explanation: Mean Dia [ Wire dia, Wire dia index, Load ] Stress, Mean Dia [ Wire dia, Spring Rate ] No. of Coils Cursor Scale: C (spring index) Back: Instructions (part one) Well (top): Instructions (part two) Well (bottom): English equivalents of metric spring wire  2 Page Instructions 2.75Mb |
 S491 Simplon Primary |
Simplon Primary Made in England Front Scale: LU, A [ B, CI, C ] D, LL Back: Equivalents Original Owner/Location: Unk/Chinoor, England |
 P208 Simplon Bilateral S-B-5 |
Simplon Bilateral S-B-5 Made in England - Pat Pending Front Scale: A [ B, C ] D Back: Scales: A, Sine(S), Log(L), Tan(T), D Reversible bilateral cursor |
 S107 Simplon Bilateral (Log Log) |
Simplon Bilateral (Log Log) Made in England - Pat 413308 Front Scale LU, A [ B, CI, C ] D, LL Back: Slide Blank A, Sine, Log, Tan, D Reversible (bilateral cursor) Original Owner/Location: Unk/England |
 S390 Simplon SR-10 Bilateral (Rietz System) |
Simplon SR-10 Bilateral (Rietz System) Made in England - Pat 413308 Front Scale (extended) D3, A [ B, C ] D, L Back Scale A, Sine(S), Log(L), Tan(T), D Reversible (bilateral) cursor Original Owner: E.C. Evans/ England |
 S390 Simplon SR-10 Bilateral (Rietz System) |
Simplon SR-10 Bilateral (Rietz System) Made in England - Pat 413308 Front Scale (extended) D3, A [ B, C ] D, L Back Scale A, Sine(S), Log(L), Tan(T), D Reversible (bilateral) cursor |
 REF Simplon XL-10 (Log Log) Bilateral |
Simplon XL-10 (Log Log) Bilateral Made in England - Pat 413308 Front Scale (extended) LU, A [ B, CI, C ] D, LL Back Scale A, Sine(S), Log(L), Tan(T), D Reversible (bilateral) cursor Archive - Rod Lovett Collection |
| L09 Stanley London 20inch Made in England Front Scale: 20inch // A [ B, CI, C ] D || 50cm Back Slider: [ S, L, T ] Back: Equivalents |
Technical Sales REF Technical Sales 1081, Emblem Series |
Technical Sales 1081, Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) 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 Scan contributed by Rod Lovette Collection, UK |
 REF Technical Sales 1091, Emblem Series |
Technical Sales 1091, Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) Front Scale T1, T2, A [ B, BI, CI, C ] D, P, S Cos, ST Back Scale LL3, LL2, LL1, DF [ CF, CIF, CI, C ] D, L, K Cursor: Multiple Hairlines Scan contributed by Rod Lovette Collection, UK |
 S500 The Technical Standard Slide Rule |
The Technical Standard Slide Rule British Made - solid celluloid cursor frame Front Scale (extended) 10inch // M, A [ B, C ] D, N \\ 27cm Back Scale: [ S, ST, T ] Back side windows Original Owner/Location: Unk/England |
 S240 The Technical Standard Slide Rule |
The Technical Standard Slide Rule British Made - all glass cursor Front Scale (extended) 10inch // M, A [ B, C ] D, N \\ 27cm Back Scale: [ S, ST, T ] Back side windows Original Owner/Location: Unk/England |
 S424 P.I.C. - I.C.S.- London |
P.I.C. - I.C.S.- London Made in England by A.G.Thornton/PIC for I.C.S., London Note cursor design Front Scale (extended) 10in // A [ B, CI, C ] D \\ 27cm Back Scale: { S, L, T ] Back: Equivalents/Material Properties Original Owner/Location: Unk/England |
 S382 Thornton P.I.C. |
Thornton P.I.C. Made in England by A.G.Thornton Front Scale (extended) 10in // A [ B, CI, C ] D \\ 27cm Back Scale: { S, L, T ] Back: Equivalents/Material Properties Original Owner/Location: Unk/England |
 S278 P.I.C. 101 |
P.I.C. 101 Made in England by A.G.Thornton - Engine Divided , Pat 411090 Front Scale 27cm // A [ B, ISd/ITd, Td/Sd, C ] D, L \\ 10in Back Slide: Blank Back: Equivalents Multiple hairlines Original Owner/Location: Unk/England |
 REF P.I.C. VP-124 Pocket |
P.I.C. VP-124 Pocket Made in England by A.G.Thornton - Engine Divided , Pat 411090 Front Scale 5in // LL3, K, A [ B, RC(CI), ISd/ITd + Td/Sd, C ] D, P Cursor: Multiple hairlines Back: Unknown Archive - Chris Gillings Collection |
 REF P.I.C. 130 Pocket Electro |
P.I.C. 130 Pocket Electro Made in England by A.G.Thornton - Engine Divided, Pat 411090 Front Scale 15cm // LL2, LL3, Int + A(Kw) [ B(hp), CI, ISd/ITd, Td/Sd, C ] d + D, K || 5 inch Back Slide: Blank Well: Dynamo-Motor Efficiency, Volt Archive - Atsushi Tomozawa Collection |
 S376 P.I.C. 131 /PC18 Electro |
S376 P.I.C. 131 /PC18 Electro Made in England by A.G.Thornton - Engine Divided, Pat 411090, 754938 Front Scale (extended) 27cm // E1, E2, Int + A(Kw) [ B(hp), R, ISd/ITd, Td/Sd, C ] d + D, ƒ(s) || 10inch Well: Dynamo-Motor η=%, Volt [Note: Plastic slide indicator hairline] Back Slide: Equivalents, Weights of materials 3 Full hairlines Original Owner/Location: S.Kacharya/England  |
 S280 P.I.C. F3649 |
P.I.C. F3649 Made in England by A.G.Thornton - Engine Divided Front Scale 27cm // LL2, A [ B, CI, C ] D, LL3 \\ 10in Back Slide: [ S, L, T ] Back: Equivelants Original Owner/Location: Unk/England |
 S269 P.I.C. 3650 Electrical |
P.I.C. 3650 Electrical Made in England by A.G.Thornton - Engine Divided Front Scale (extended) 27cm // LL2, A(KW) [ B(HP), CI, C ] D, LL3 \\ 10in Back Slide: [ S, L, T ] Well: Dynamo/Motor%, Volts Multiple hairlines Original Owner/Location: Unk/England |
 S212 P.I.C. 3654 |
P.I.C. 3654 Made in England by A.G.Thornton - Engine Divided Front Scale 27cm // A [ B, CI, C ] D \\ 10in Back Slide: [ S, L, T ] Multiple hairlines Original Owner/Location: Unk/England |
 REF P.I.C. 4457 |
P.I.C. 4457 Made in England by A.G.Thornton - Engine Divided Front Scale (extended) 13cm // A [ B, RC, C ] D \\ 5in Back Slide: [ S, L, T ] Archive - Tom Dilatush Collection |
 S041 P.I.C. 221 |
P.I.C. 221 Made in England by British Thornton Front Scale S, ST, T, A [ B, L, K, C ] D, DI, Ps, Pt Back Scale LL01, LL02, LL03, DF [ CF, CI, ISd/ITd, Td/Sd, C ] D, LL3, LL2, LL1 Multiple hairlines Original Owner/Location: NIB/England |
 S293 P.I.C. 241 |
P.I.C. 241 Made in England by British Thornton (overall length 34.5cm) Front Scale LL2, LL3, L, A [ B, CI, ISd/ITd, Td/Sd, C ] D, S, ST, T Back: Blank Original Owner/Location: Unk/England |
 S276 P.I.C. 271 Log Log |
P.I.C. 271 Log Log Made in England by British Thornton Front Scale LL2, LL3, L, A [ B, CI, ISd/Sd, Td/ITd, C ] D, S, ST, T Back: Blank Original Owner/Location: Unk/England |
 S383 P.I.C. 281 Standard |
P.I.C. 281 Standard Made in England by British Thornton Front Scale 25.5cm, K, DF [ CF, CI, C ] D, A, 10in Back: Blank Original Owner/Location: Unk/England |
 S238 Thornton Manheim |
Thornton Manheim - Patent 173660 Made in England - AG Thornton, Manchester Front Scale 25cm // A [ B, C ] D || 10in Back Scale: [ S, L, T ] Well: 21 inch ruler extension Multiple (3) hairlines Original Owner/Location: Unk/England |
 S098 AA010 Comprehensive |
British Thornton AA010 Comprehensive Made in England Front Scale S, ST, T, A [ B, L, K, C ] D, DI, Ps, Pt Back Scale: Blank LL01, LL02, LL03, DF [ CF, CI, ISd/ITd, Td/SD, C ] D, LL3, LL2, LL1 Original Owner/Location: UNK/England |
 S040 British Thornton AD050 Log Log |
British Thornton AD050 Log Log Made in England Front Scale LL2, LL3, L, A [ B, CI, C ] D, S, ST, T Back Scale: Blank Original Owner/Location: UNK/England |
 REF British Thornton AD060 Standard |
British Thornton AD060 Standard Made in England Front Scale 25.5cm, K, DF [ CF, CI, C ] D, A, 10in Back Scale: Blank Archive - Not In collection |
 S092 British Thornton AD150 Advanced |
British Thornton AD150 Advanced Made in England Front Scale LL1, LL2, LL3, A [ B, CI, K, C ] D, S, ST, T Back Scale: Blank Original Owner/Location: UNK/England |
 S467 British Thornton AD160 |
British Thornton AD160 Made in England Front Scale K, DF [ CF, CI, C ] D, A Back Scale: Blank Original Owner/Location: D.Wilson/England |
 REF British Thornton Nautical Speed Rule |
British Thornton Nautical Speed Rule Made in England to 0552/1448 standard Front Scale Minutes or D Long [ Sea Miles (Distance) or Knots (Speed) ] Hours-Days (Time) Back Scale Instructions [ Latitude ] Instructions, con't. Archive - Not in Collection |
 P020 English Mini-Rule |
English Mini-Rule Made in England Front Scale A [ B, CI, C ] D, K Back: Blank Original Owner/Location: Unk/England |
 P013 Unique Universal I |
Unique Universal I Made in England Front Scale LU, S, A [ S, R, C ] D, T, LL Back: Blank Original Owner/Location: Unk/England |
 P009 Unique Log-Log |
Unique Log-Log pocket Made in England Front Scale LU, A [ S, R, C ] D, LL Back: Table of Trig Ratios Original Owner/Location: Unk/England |
 P202 Unique Log-Log |
Unique Log-Log pocket Made in England by Technical Supplu Co., Brighton Front Scale LU, A [ S, R, C ] D, LL Back: Table of Trig Ratios Original Owner/Location: Unk/England |
 P010 Unique Concrete Calculator |
Unique Concrete Calculator - pocket Made in England Front Scale A(thickness) [ B(height), C(length) ] D (volume) Back: Adv: Ready Mix Concrete Original Owner/Location: Unk/England |
 P199 Unique Five-Ten |
Unique Five-Ten Made in England Front Scale: Note scales wrapped to double the length to 10 inches A1, D1 [ C1, L1 | L2, C2 ] D2, A2 Back: Table of Trigonometrical Ratios Original Owner/Location: Unk/England |
 REF Unique Ten-Twenty |
Unique Ten-Twenty Made in England Front Scale: Note scales wrapped to double the length to 20 inches A1, D1 [ C1, L1 | L2, C2 ] D2, A2 Back: Equivalents and material properties Archive - Jim Bready Collection (UK) |
 P011 Unique J180 |
Unique J180 Made in England - 9" long Front Scale K, A [ B, CI, C ] D, S, T, STR Back: Blank Original Owner/Location: Unk/England |
 S069 Unique Universal |
Unique Universal Made in England - Tacked laminate, metal frame cursor Front Scale LU, S, A [ B, CI, C ] D, T, LL Back: Trig Identities Original Owner/Location: Unk/England |
 S267 Unique Universal I |
Unique Universal I Made in England - Tacked laminate, Plastic frame cursor Front Scale LU, S, A [ B, R(CI), C ] D, T, LL Back: Trig Identities Original Owner/Location: Unk/England |
 S405 Unique Universal One |
Unique Universal One (Modern) Made in England Front Scale LU, S, A [ B, CI, C ] D, T, LL Back: Conversion Factors Original Owner/Location: Unk/England |
 S062 Unique Universal II |
Unique Universal II Made in England - Tacked laminate Front Scale LU, A [ B, S, T, C ] D, LL Back: Trig Identities Original Owner/Location: Unk/England |
 S063 Unique Universal II |
Unique Universal II Made in England - new cursor, no tacks Front Scale LU, A [ B, S, T, C ] D, LL Back: Trig Identities Original Owner/Location: Unk/England |
 S272 Unique Universal Two |
Unique Universal Two (Modern) Made in England - new cursor, new logo Front Scale LU(LL2), A [ B, S, T, C ] D, LL(LL3) Back: Trig Identities Original Owner/Location: Unk/England |
 S126 Unique Log Log |
Unique Log Log Made in England Front Scale LL2, A [ B, C] D, LL3 Back: Trig Identities Owners: J.D.Freeman/The College at Marlborough England Owners: Sidney Sussex/Cambridge College, England |
 S126 Unique Log Log (Modern) |
Unique Log Log (Modern) Made in England - new cursor, new logo Front Scale LU(LL2), A [ B, C] D, LL(LL3) Back: Trig Identities Owners: New |
 S279 Unique Brighton |
Unique Brighton Made in England by USRC Front Scale 25.4mm // K, A [ B, CI, C] D, L, P || S, T Back Scale: LL1, LL2, LL3 Well: Decimal Equivalents Back: Trig Identities Owners: D.A. Bridle/Dorset, England |
 S484 Unique Commercial |
Unique Commercial Made in England Front Scale H, K, M [ N (Discounts Scale), R(CI), C] D, U, V Back: Table for converting shillings and pence into pounds |
 S413 Unique Electrical |
Unique Electrical Made in England Front Scale LL2, Fahr, DF [ CF, CI, C ] D, Cent, LL3 Back: Specific Resistance & Temp Coeff. Table of Metals |
 S279 Unique Electrical |
Unique Electrical (modern cursor) Made in England Front Scale LL2, Fahr, DF [ CF, CI, C ] D, Cent, LL3 Back: Specific Resistance & Temp Coeff. Table of Metals Archive - Atsushi Tomozawa Collection |
 S413 Unique Tubemaking And Deep Drawing |
Unique Tubemaking And Deep Drawing - 1952 Made in England by Unique for Tube Investments, Ltd. Departsments of Development and Research and of Plant and Construction Front Scale MM, R1 [ R2, TH(1G-21G), TH(22G-44G), TH(33-314), C ] D, WT (Mild Steel) Back: Weight Conversion Factors, Given Steel=1.000  Ad |
 P207 W.H. Smith Simplified Reitz |
W.H. Smith & Son Simplified Reitz Made in Englan (by BRL?) Front Scale K, A [ B, CI, C ] D, L Original Owner/Location: Unk/England |
ISRM W.H. Smith - Jakar 29 Student Log/Log |
Jakar 29 Student Log/Log Made in Japan by Fuji for British Market Front Scale L, K, A [ B, CI, C ] D, S Cos, ST, T Cot Back Scale: 25cm [ S, LL2, LL3 ] 10in Note: WH Smith sleeve and instructions Donated by David Hecht, Alexandria, VA 
Instructions 2.73MB PDF
|
 ISRM Wiljon Technik-Art Log Log Trig |
Wiljon Technik-Art Log Log Trig Made in England by Blundell Harling Front Scale K, LL2, LL3, A [ B, L, CI, C ] D, S, T, ST Back: Blank Donated by David Hecht,Alexandria, VA |
 P047 Bristol P19-5 |
Bristol P19-5 - Simplex Made in Japan - Advertising use Front Scale 5in // K, A [ B, CI, C ] D, L Back slider: [S, ST, T ] Sleeve Adv: Therm-Ohio |
