United Kingdom British Slide Rules England was the home of John Napier (1550-1617), Edmund Gunter (1581-1626), William Oughtred (1575-1660), and many others, giving the British the credit for kicking off the development of the wide use of slide rules and calculators based on logarithims. This gallery shows British based manufacturers and distributors in the United Kingdom that do not have their own gallery

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The Anido Slide Rule (1923) ISRM 13.02.20.02 British Patent GB195286 Figure 1 & 2

The Anido Slide Rule (1923) Designed by Albert John Anido (1883-1949), of 69 Earls Court, London, England Patent: GB 195,286 March 29, 1923 Note: Railroad track type divisions. Has Special Plus and Minus Log scales used for Constants Conversions. Front Scale: 10in (10ths) // +L, A [ B, C ] D, -L \\ 25cm Back Scale: [ Constants Conversions, LE, T ] Well (using beveled end of slide as indicator): [ Sines, Cos ] Albert John Anido (ca1890) Albert John & Ernestine Regina Anido (ca1900) Known history: Albert John Anido was Born in Montevideo, Uruguay (1883). He had a sister, Ernestine Regina Anido (1879-1948) and brother William Nicholas Anido (1881-1914). Mentioned as an elected student in the Journal of the Institution of Electrical Engineers, Volume 40 (1907-1908) page 411. Graduated B.SC.(Eng) at the University of London in 1909. Married to Nellie Helen Blanch Forsdyke. They had a son, John David Forsdyke Anido (1916-2001). The 1914-1919 Jerseymen roll of service includes an Albert John Anido of military age who fought in the First World War and the 21 March 1916 London Gazette lists the London Electrical Engineers: Corporal Albert John Anido to be Second Lieutenant (on probation) working with the anti-aircraft corps. A later record in the London Times shows an Albert John Anido (sn 73845) as being a pilot in training in 1941, but he would have been 58 by then, so this must be some other relation. The 1939 London Gazette shows that he died atFlat 6, Eaton Hall, 15, Eaton Gardens, Hove, Sussex, 22nd January, 1949 and his last profesion as being an Engineering Tutor. Besides his slide rule patent, Albert Anido obtained GB 260,497 Indicating ringing of bells to operators in 1926.

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

British Slide Rule Co

REF British Slide Rule Co - The Supreme

British Slide Rule Co - The Supreme Made in England Front Scale 10 in // M, S, A [ B, CR, C ] D, T, N \\ 27 cm Back Scale Equivalents Tables Note: CR is usually shown as C1 or R. M & N are usually denoted LU & LL or LL2 & LL3. Photo contributed by Dave Riches Collection

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
100 Station Approach Road, Ramsgate, Kent, England

Farmar's Profit-Calculating Rule	Farmar's Profit-Calculating Rule Made in England - Business Slide rule Roller: Slide: Archive - Scan by Nathan Zeldes, Israel.

Regal series
Model Numbers

ISRM Helix Regal A102S

Helix Regal A102S Made in Japan for Helix Works, Stourbridge, Worcestershire, England. Front Scale S, K, A [ B, CI, C ] D, L, T Back: Blank Acquired out of England Note: Both the Regal and Hellerman slide rules use the same cursor and may be swapped with each other. Helix Regal series Instructions (2.1MB pdf).

Hellerman Slide Rules Ltd.

1989 London Gazette Liquidation Notice

HELLERMAN SLIDE RULES LIMITED P.O BOX 810, FRIARY COURT 65 CRUTCHED FRIARS,LONDON EC3N 2NP,UNITED KINGDOM Incorporated: 19 Jan 1960 by Esmond Hellerman Dissolved: 1989 Esmond Hellerman imported and distributed slide rules from Japan, Denmark (UTO) and Czechoslovakia (Logarex) as well as numerous other drafting and engineering instruments. The business lasted 29 years.

ISRM Hellerman No. 51

Hellerman No. 51 Made in Japan Front Scale S, K, A [ B, CI, C ] D, L, T Back: Blank Acquired out of England Note: Both the Regal and Hellerman slide rules use the same cursor and may be swapped with each other.

Norton & Gregory Ltd

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

Cylindrical Pocket Slide Rule with Helical Scales
Scale effective length 66 in (168 cm) with 4 significant figures.

Otis Carter Formby King biography by Susan Richards

Known addresses of Carbic Ltd. (1921-1972): 0: 44 & 66 Bray's Lane, Coventry (1921) A: "Ashdene," Emscote Road, Stoke, Coventry (1922) 1: 51 Holborn Viaduct, London, EC1 (c1940) 2: 137 Conway Road, London, N14 3: 171 Seymour Place, London, W1 4: 54 Dundonald Rd, London, SW19 (Addresses 0, 1, 3, and 4 are found on instruction sheets or rules)

Patents UK patent GB 183,723 (1921) UK patent GB 207,762 (1922) UK patent GB 207,856 (1922) US patent US 1,645,009 (1923) Canadian patent CA 241986 Canadian patent CA 241076 French patent FR569985 French patent FR576616 German patent DE 418814

Otis King Classification Types According to Peter Hopp, there are 3 principle types, A, B and C and a B/C Hybrid. See Richard Lyon's Website

Sketch from Colin Barnes article in JOS Vol 4 No 2

Patent UK183723 Issued Aug 3, 1922

Manual 8 Pages (524Kb PDF)

Known Scale Sets: 409/410, 414/423, 416/417, 422/424, 429/430
Known Models: K, L, N.

REF Otis King Model K Cylindrical (Type A 1921-1923)	Otis King Model K Cylindrical (Type A) Made in England - 66 inch scales for multiplication and division Patents: UK 183723 Serial number: Scales: 424 and 422 Archive - Ebay Photo Leather Case
ISRM Otis King Model K Cylindrical (Type C 1960)	Otis King Model K Cylindrical Made in England - 24mm Dia. x 260mm Long, 66 inch scales Patents: UK 183723 Serial number: V7554 Scales: 423 and 414 Leather Case
REF Otis King Model K Cylindrical (Type C )	Otis King Model K Cylindrical Made in England - - 24mm Dia. x 260mm Long, 66 inch scales Patents: UK 183723 Serial number: Scales: 414 and 423 Archive - Hermann's Slide Rule Catalogue st ISRM
REF Otis King Model L Cylindrical (Type B )	Otis King Model L Cylindrical Made in England - - 24mm Dia. x 260mm Long, 66 inch scales Patents: UK 183723 Serial number: Scales: 429 and 430 Archive - Hermann's Slide Rule Catalogue at ISRM

F. S. Ratcliffe
Crawford Spring Works, Rochdale, England

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

"SIMPLON"

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

W.F. Stanley & Company - Holborn, London, England

W. F. Stanley and Company, manufacturers of mathematical, drafting and scientific instruments, was founded in 1854 by William Ford Robinson Stanley (1829-1909); it became a limited company (corporation) in 1900. In 1861 Stanley invented a prize-winning straight-line dividing machine that was used to make accurate scales for slide rules and other mathematical instruments. Among the slide rules manufactured and distributed by the Stanley company were the C.T. Cooper slide rule and the Fuller spiral slide rule, designed by George Fuller in 1878.

REF Cooper 100 Inch Slide Rule	Cooper 100 Inch Slide Rule Made by Stanley, London for C.T. Cooper & Son. Circa 1920 Dimensions: Height 19.5cm Width 24.5 cm Depth 3cm Material: Polished hardwood fixed with brass screws and with white celluloid (early plastic) calculating scale. The cursor is metal. Scales: C [D ] 20 segments Photo from March 2009 Philip Weiss Auction and the National Museum Of American History

Technical Sales Ltd., London

Emblem Series Instructions (19MB)

ISRM Technical Sales 1051 Tutor Emblem Series	Technical Sales 1051 Tutor Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) Front Scale: K, DF [ CF, CIF, CI,, C ] D, A Back: Blank Cursor: Multiple Hairlines Donated by Richard Davis, Las Vegas, Nevada
Need Technical Sales 1052 Olympic Emblem Series	Technical Sales 1052 Olympic Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) Front Scale L, K, A [ B, CI,, C ] D, S Cos, ST Cos, T Cot, Back Scale 25 cm [ Blank ] 8 in Cursor: Multiple Hairlines
ISRM Technical Sales 1053 Olympic LL Emblem Series	Technical Sales 1053 Olympic LL Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) Front Scale L, K, A [ B, CI,, C ] D, S Cos, ST Cos, T Cot, Back Scale 25 cm [ S, LL2, LL3 ] 8 in Cursor: Multiple Hairlines Donated by Richard Davis, Las Vegas, Nevada
ISRM Technical Sales 1071 Commercial Emblem Series	Technical Sales 1071 Commercial Emblem Series Made in Japan for British Company T.S. (by Uchida Yoko, Co) Front Scale F1 [ F2, 1/C, C ] D, Units Conversions Back Scale: £, s./d. Cursor: Multiple Hairlines Donated by Richard Davis, Las Vegas, Nevada TS Emblem 1071 Commercial Instructions (7.46MB pdf).
ISRM Technical Sales 1081 TechLog Emblem Series	Technical Sales 1081 TechLog 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 Donated by Richard Davis, Las Vegas, Nevada
ISRM Technical Sales 1091 Executive Emblem Series	Technical Sales 1091 Executive 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 Donated by Richard Davis, Las Vegas, Nevada

Technical Standards

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

W. H. Smith & Son

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

Westechno Ltd. Exmouth, Devon, England

Westec Electronics Slide Rule ISRM 13.04.26.02

Westec Electronics Slide Rule Made in England by B.R.L. (ref P2361) for Westechno. Ltd., Exmouth, Devon, England Patents: Provisional No.49828 Front Scale (Lr)H, K, (fx)2π, A [ (Cr)B, S Cos, T Cot, (Lx or Cx)CI, XL or fr) C ] D (XC), L, Ln, ST Back: Design aids for Reactance, Resonance, Temperature, Ohm's Law, Frequency and Wavelength, Equivalents, etc. Note: This is the only slide rule, besides those made by Pickett, to have an 'Ln' scale Gift of Phillip Rodley, Upper Hutt, NZ Phillip Rodley

Wiljon Technik-Art

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

Wollaston, William

REF Wollaston Chemical Slide Rule

Wollaston Chemical Slide Rule Made in England by William Hyde Jackson Wollaston_ Front Scale: Chemical Equivalents William Hyde Jackson Wollaston - (1766-1828) United Kingdom. Chemist. Physicist. Physiologist. Practised medicine from 1789-1801. Wollaston became wealthy by developing the first physico-chemical method for processing platinum ore in practical quantities, and in the process of testing the device he discovered the elements palladium (symbol Pd) in 1803 and rhodium (symbol Rh) in 1803. Also known for Camera lucida and Dark lines in the solar spectrum. Developed the Wollaston Slide Rule of Chemical Equivalents in 1814. Made discovery of absorption lines in solar spectrum; 1793 - elected a fellow of the Royal Society (FRS); 1795 - elected a fellow of the Royal College of Physicians; 1802 - The Royal Society awarded him the Copley medal;