This page has links to photographs of vintage mechanical calculators on this website.
Click on a calculator to see a photograph of it, then click on your browser "Back" button to return to this page.
As well as calcualtors and adding machines, this page also has phtographs of accounting machines. These are calculators which are fitted with a typewriter carriage so that the calculations can be printed on forms, such as
receipts and accounts.
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Addiator
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Addiator Sterling currency model. Featured calculator.
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Addiator Addfeet Junior, feet and inches model, c1960s-1980s, Germany. Featured calculator.
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Addiator Addimax Sub-Zero, decimal model designed to display a negative balance in a second set of windows, 5 decades. Machine in photograph shows -12345. c1960s.
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Add-Index
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Add-Index, mounted on a cash drawer, is similar to the "American" adder Combination Cash Register. Jan 08.
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Addmaster
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Addmaster 208H, inside, electrically-driven, 10-key add-lister.
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Addmaster Baby, Sterling currency, 'Addiator', c1960s. Featured calculator.
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Addmaster Indian currency calculator, 'Addiator'. Featured calculator.
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Addometer
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Addometer standard decimal model, dial calculator. Featured calculator.
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Addometer feet and inches model, dial calculator. Featured calculator.
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Addometer Sterling currency model, dial calculator. Featured calculator.
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Baby
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Baby Calculator, decimal "Addiator", 7 decades.
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Bell Punch Co. (British manufacturer, used the names Plus, Sumlock, and
after 1960 Comptometer).
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Comptometer 993m, electrically driven Comptometer with storage register, Britain, 1969s. Featured on sister site.
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Comptometer 993s, electrically driven Comptometer with storage register, Britain, 1969s. Featured calculator.
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Plus Adder S, Sterling currency abbreviated "Comptometer" type, 1940s. Featured on sister site.
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Plus 506/D, abbreviated, decimal 'comptometer', 1950s/1960s. Featured calculator.
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Plus 509/D, abbreviated, decimal 'comptometer', 1950s/1960s. Featured on sister site.
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Plus 509/T, abbreviated, time 'comptometer', 1950s/1960s. Featured on sister site
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Plus 509/Y, abbreviated, imperial weight 'comptometer', 1950s/1960s. Featured on sister site
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Plus 512/S, abbreviated, Sterling currency 'comptometer', 1950s/1960s. Featured on sister site
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London Computator Corporation Sumlock 912/S.
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Sumlock 912/S, Sterling currency 'comptometer', 1950s/1960s. Featured calculator.
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Sumlock 912/Y, imperial weight 'comptometer', 1950s/1960s. Featured on sister site
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Bohn Contex - U.S. company Bohn Rex-Rotary marketed some mechanical calculators made by Contex, see Contex.
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Britannic (British company)
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Britannic, pinwheel calculator, England. Featured British calculator.
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Brunsviga (German manufacturer)
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Brunsviga 10, stepped gear calculator, 1930s/1940s. Featured calculator.
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Brunsviga 13Z, double calculator. Comprising two pin-wheel calculators joined together, double calculators made some types of calculation much easier.
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Brunsviga Addsum 94T, Sterling currency, full-keyboard adder, 1950s-1960s, Germany. Featured calculator.
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Brunsviga D13, double calculator. Comprising two pin-wheel calculators joined together, double calculators made some types of calculation much easier.
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Burroughs (U.S. company, also manufactured in Scotland and France)
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Burroughs ABC Universel AP series J, Sterling currency, electrically driven, 10-key add-lister, 1960s/1970s, France. Featured calculator
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Burroughs E5, without cover, decimal 5-decade "comptometer", 188x291x122mm / 7.5x11.5x5.
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Burroughs "comptometer" type calculator.
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Burroughs J281, with cover removed, 10-key add-lister, electrically driven, Brazil, c1950s/60s.
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Burroughs model P (S), Sterling currency, hand-driven add-lister, Scotland, c1950s/1960s. Featured calculator.
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Busicom (Japanese manufacturer, originally Nippon Calculator)
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Busicom / Nippon Calculator HL-21, pinwheel calculator, 1960s. Featured calculator.
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Commodore (in the 1960s Commodore sold 10-key mechanical calculators)
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10-key calculator with badge for the British Distributor OEM (Office and Electronic Machines Ltd.) - if you know the model number please get in touch.
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Comptometer (Manufactured by Felt & Tarrant, after 1960 by Bell Punch Co.)
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Comptometer model J for Sterling currency, 1920s/1930s. Featured calculator.
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Contex (Danish manufacturer - some models were marketed by the U.S. company Bohn Rex-Rotary and are labelled Bohn Contex)
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Bohn Contex, hand-operated, 10-key, c1960s.
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Contex, Sterling currency, abbreviated-keyboard adder, Denmark. Featured calculator.
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Countess (distributed in Britain by Bowler Products Ltd.)
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Countess, Sterling currency, dial calculator, c1960s. Featured calculator.
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Curta
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Curta I, miniature stepped gear calculator, 1948-early 1970s. Featured calculator.
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Dalton (Dalton Adding Machine Co., U.S.A.)
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Dalton, was the first 10-key adding machine. Designed by Hubert Hopkins in 1902 the early models have glass panels in the sides through which the mechanism can be seen. Pictured is a
later model.
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Decimo (British marketing company)
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Decimo 10-key add-lister, Japan. Featured British calculator.
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Exactus
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Exactus Mini-Add, England. Featured British calculator.
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Facit (for an illustrated history of Facit calculators go to James Redin's site at http://www.dotpoint.com/xnumber/cmisc_facit_page.htm)
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Facit, pinwheel calculator. c1950s.
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Facit CI-13, hand-driven, keyboard-set, pinwheel calculator, 1957-1970s. Featured calculator.
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Facit CM2-16, hand-driven, keyboard-set, pinwheel calculator, 1959-1967.
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Facit ESA-01, electrically-driven, keyboard-set, pinwheel calculator, 1949-1956. Featured calculator.
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Famosa
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Famosa, Pinwheel calculator. c1960s.
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Felt & Tarrant (U.S. manufacturer, see Comptometer)
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Friden (U.S. manufacturer)
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Friden SR101, can extract quare roots. Feb 08.
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Fuller (Made by W.F. Stanley & Co., London)
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Fuller Calculator Model No. 2, a desktop spiral slide-rule, with one scale of 42 feet (12 metres) length and two of 30 feet (9 metres). Compare with the hand-held Otis King calculator. Apr 07.
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Golden Gem
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Golden Gem, chain adder. Featured calculator.
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Imperial (Imperial Typewriter Co., British company, became part of the Litton Industries group)
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Imperial Office Master, hand-operated, 10-key add-lister, 1970, Germany. Featured calculator
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Imperial Office Master Electric, electrically-driven, 10-key add-lister, 1970, Germany. Featured British calculator
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Kingson
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Kingson Four-Rule front, rear, combined 'Addiator' and slide-rule, c1960s, Hong Kong. Featured calculator
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Kingson Pocket Calculator, Sterling currency 'Addiator', c1960s, Hong Kong. Featured calculator.
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London Computator Corporation (See Bell Punch Co.)
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Madas (Multiplication, Automatic Division, Addition, and Subtraction, made in Switzerland by H.W. Egli)
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Madas 20BZG, electrically driven stepped gear calculator with automatic multiplication and division, 1950s/1960s. Featured
calculator.
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Marchant (U.S.A. company, for more details and calculator serial numbers see Marchant in the Calculator Companies section)
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An early keyboard model Marchant, photo 2.
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Marchant 8CM, electrically driven.
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Marchant 8D, 4-functions, electrically driven, c1942.
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Marchant Figurematic, 4-function, full-keyboard, 1950s/60s.
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Marchant H6, photo 2.
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Melitta (German company)
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Melitta, pinwheel calculator, introduced c1925.
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Melitta, pinwheel calculator, c1960s.
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Monroe (U.S. company)
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LN-160X, stepped-gear calculator. Featured calculator.
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Muldivo (British marketing company, see the Muldivo section of this site)
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No model number, made in France, 1920s. Featured British calculator.
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Muldivo AE (made by Thales), Germany. Featured British calculator.
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Muldivo DER (made by Thales), Germany. Featured British calculator.
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Muldivo Mentor, (re-badged Walther WSR160), pinwheel calculator, Germany, 1960s. Featured calculator.
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Numeria
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Numeria 7903, c1950s/60s, Italy. Uses an unusual mechanism based on movable pins on sector plates (for details see http://www.rechenwerkzeug.de:80/numeria.htm).
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Odhner
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Odhner, pinwheel calculator, c1935-1945, Sweden. Featured calculator.
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Olivetti (Italian manufacturer, also sold in the U.S.A. under the Underwood name)
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Olivetti Audit 413, photo 2, accounting machine, electrically driven. Appears to be for calculating in the old Sterling £sd currency, based on the
Olivetti Tetractys 4-function calculator.
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Olivetti Electrosumma 22R, Sterling currency, electrically driven, 10-key add-lister, 1960s. Featured calculator
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Olivetti Summa Prima, Sterling currency, hand-operated, 10-key add-lister, 1960s. Featured calculator.
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Otis King (cylindrical slide-rules manufactured in Britain by Carbic Ltd.)
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Otis King model L, cylindrical slide-rule, 1920s to 1970s. Featured calculator.
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Plus (See Bell Punch Co.)
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Pocket Adding Machine
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Pocket Adding Machine, sterling currency "Addiator", 5 £ decades, 86x128mm/3.4x5", similar to Pro Calculo.
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Problem Solver
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Problem Solver, appears to be made by Olivetti, c1960s. If you have any information about why this is labelled "Problem Solver" please get in touch.
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Produx
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Produx Multator photo 1, photo 2, c1960s.
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Remington (also manufactured typewriters and were part of Sperry Rand)
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Remington 221, Electrically-driven, 10-key add-lister. c1960s.
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R C Allen
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R C Allen, full-keyboard add-lister. c1950s-1960s.
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Rolls Record
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Rolls Record - 6, photo 2, stylus operated "Addiator"-type decimal calculator, 6 decades, addition on front, subtraction on back.
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S & N (Seidel & Naumann)
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Sterling currency adding machine. From 1910 - .
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Smith Corona (U.S. company, also Smith Corona Marchant (SCM))
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Smith Corona model unknown, hand-operated, full-keyboard add-lister. Featured calculator.
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Smith Corona SCM 1011 CB, electrically driven, 10-key add-lister, 1960s, Japan. Featured calculator.
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SUN (See S & N)
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Sumlock (See Bell Punch Co.)
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Thales
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Thales, c1950s-1960s.
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TIM (Time Is Money)
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TIM (Time Is Money) stepped-drum calculator, early model, with number setting by sliders.
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Victor
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Victor, full-keyboard add-lister, c1950s-1960s, U.S.A.
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Walther (German manufacturer)
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Walther WRS160 (badged as the Muldivo Mentor), pinwheel calculator, 1960s. Featured calculator.
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Thanks to those who have supplied photographs for inclusion in this photographic library, as credited on the photographs.
