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Mechanical Calculator Photograph Library

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.

For extra information on calculator types click here: "Addiators", Pinwheel Calculators.

As well as calculators and adding machines, this page also has photographs 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.


Accurator

Accurator

Accurator, decimal model, "Made in Hong Kong. Britsh Empire."


Addiator

Addiator Sterling currency model

Addiator Sterling currency model. Featured calculator.

Addiator Addfeet Junior

Addiator Addfeet Junior, feet and inches model, c1960s-1980s, Germany. Featured calculator.

Addiator Addimax Sub-Zero

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.


Add-Index

Add-Index

Add-Index, mounted on a cash drawer, is similar to the "American" adder Combination Cash Register.


Addmaster

Addmaster 208H

Addmaster 208H, inside, electrically-driven, 10-key add-lister.

Addmaster Baby

Addmaster Baby, Sterling currency, 'Addiator', c1960s. Featured calculator.

Addmaster Indian currency calculator

Addmaster Indian currency calculator, 'Addiator'. Featured calculator.


Addo (Swedish company. Some calculators also manufactured by British subsidiary.
Addo-X models are 10-key machines).

Addo Mod 9

Addo Mod 9, full-keyboard add-lister for the old sterling currency (£sd). Featured calculator.

AddoMod 16

Addo Mod 16, full-keyboard add-lister for the old sterling currency (£sd). Featured calculator.

Addo Multo Mod 3

Addo Multo Mod 3, photo of mechanism, pinwheel calculator with 10-decade setting register, 13-decade result register, 8-decade counting register.

Addo-X

Addo-X, 10-key add-lister.


Addometer

Addometer standard decimal model

Addometer standard decimal model, dial calculator. Featured calculator.

Addometer feet and inches model 

Addometer feet and inches model, dial calculator. Featured calculator.

Addometer Sterling currency model 

Addometer Sterling currency model, dial calculator. Featured calculator.


Baby

Baby Calculator

Baby Calculator, decimal "Addiator", 7 decades.


Bell Punch Co. (British manufacturer, used the names Plus, Sumlock, and after 1960 Comptometer ).  To see more photographs of other models visit the sister site about the Bell Punch Company calculators.

Comptometer 993m

Comptometer 993m, electrically driven Comptometer with storage register, Britain, 1969s. Featured on sister site .

Comptometer 993s

Comptometer 993s, electrically driven Comptometer with storage register, Britain, 1969s. Featured calculator.

Plus Adder S

Plus Adder S, Sterling currency abbreviated "Comptometer" type, 1940s. Featured on sister site.

Plus 506/D

Plus 506/D, abbreviated, decimal 'comptometer', 1950s/1960s. Featured calculator.

Plus 509/D

Plus 509/D, abbreviated, decimal 'comptometer', 1950s/1960s. Featured on sister site.

Plus 509/T

Plus 509/T, abbreviated, time 'comptometer', 1950s/1960s. Featured on sister site.

Plus 509/Y

Plus 509/Y, abbreviated, imperial weight 'comptometer', 1950s/1960s. Featured on sister site.

Plus 512/S

Plus 512/S, abbreviated, Sterling currency 'comptometer', 1950s/1960s. Featured on sister site.

London Computator Corporation Sumlock 912/S

London Computator Corporation Sumlock 912/S.

Sumlock 912/S

Sumlock 912/S, Sterling currency 'comptometer', 1950s/1960s. Featured calculator.

Sumlock 912/Y

Sumlock 912/Y, imperial weight 'comptometer', 1950s/1960s. Featured on sister site.


Bohn Contex (U.S. company Bohn Rex-Rotary marketed some mechanical calculators made by Contex, see Contex.)


Britannic (British company)

Britannic

Britannic, pinwheel calculator, England. Featured British calculator.

Britannic Duo

Britannic Duo, dual pinwheel calculator, England. Featured British calculator.


Brunsviga (German manufacturer)

Brunsviga 10

Brunsviga 10, stepped gear calculator, 1930s/1940s. Featured calculator.

Brunsviga 13Z, double calculator. Comprising two pin-wheel calculators joined together, double calculators made some types of calculation much easier.

Brunsviga Addsum 94T

Brunsviga Addsum 94T, Sterling currency, full-keyboard adder, 1950s-1960s, Germany. Featured calculator.

Brunsviga D13

Brunsviga D13, double calculator. Comprising two pin-wheel calculators joined together, double calculators made some types of calculation much easier.


Burroughs (U.S. company, also manufactured in Scotland and France)

Burroughs ABC Universel AP series J

Burroughs ABC Universel AP series J, Sterling currency, electrically driven, 10-key add-lister, 1960s/1970s, France. Featured calculator.

Burroughs E5

Burroughs E5, without cover, decimal 5-decade "comptometer", 188x291x122mm / 7.5x11.5x5.

Burroughs “comptometer” type calculator

Burroughs "comptometer" type calculator.

Burroughs J281

Burroughs J281, with cover removed, 10-key add-lister, electrically driven, Brazil, c1950s/60s.

Burroughs model P (S)

Burroughs model P (S), Sterling currency, hand-driven add-lister, Scotland, c1950s/1960s. Featured calculator.


Busicom (Japanese manufacturer, originally Nippon Calculator)

Busicom / Nippon Calculator HL-21

Busicom / Nippon Calculator HL-21, pinwheel calculator, 1960s. Featured calculator.


Commodore (in the 1960s Commodore sold 10-key mechanical calculators)

Commodore 10-key calculator

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.


Comptometer (Manufactured by Felt & Tarrant Manufacturing Co. U.S.A., after 1960 by Bell Punch Co.)

Comptograph 101

Comptograph 101, 1950s - 1960s, manufactured by Walther in Germany. Featured on sister site. Oct 16.

Comptometer 992

Comptometer 992 for Sterling currency (£sd), 1950s - 1960s, electric motor driven.  Featured calculator. Jan 17.

Comptometer

Comptometer model J for Sterling currency (£sd), 1920s - 1940s. Featured calculator.

Comptometer model J for Imperial weights

Comptometer model J for Imperial weights, 1920s - 1940s. Featured calculator.


Contex (Danish manufacturer - some models were marketed by the U.S. company Bohn Rex-Rotary and are labelled Bohn Contex)

Bohn Contex

Bohn Contex, hand-operated, 10-key, c1960s.

Contex

Contex, Sterling currency, abbreviated-keyboard adder, Denmark. Featured calculator.


Countess (distributed in Britain by Bowler Products Ltd.)

Countess

Countess, Sterling currency, dial calculator, c1960s. Featured calculator.


Curta

Curta I

Curta I, miniature stepped gear calculator, 1948-early 1970s. Featured calculator.


Dalton (Dalton Adding Machine Co., U.S.A.)

Dalton

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.


Decimo (British marketing company)

Decimo 10-key add-lister

Decimo 10-key add-lister, Japan. Featured British calculator.


Exactus

Exactus Mini-Add

Exactus Mini-Add, England. Featured British calculator.


Faber-Castell (German slide-rule manufacturer)

FaberCastell67-54Rb_1_tlr

Faber-Castell 67/54 Rb DARMSTADT, combined Addiator and slide-rule. Featured calculator. Mar 16.

FaberCastell67-87R_1_tlr

Faber-Castell 67/87 R RIETZ, combined Addiator and slide-rule. Featured calculator. Mar 16.


Facit (for an illustrated history of Facit calculators go to James Redin's site at http://www.xnumber.com/xnumber/cmisc_facit_page.htm)

Facit

Facit, pinwheel calculator. c1950s.

Facit CI-13

Facit CI-13, hand-driven, keyboard-set, pinwheel calculator, 1957-1970s. Featured calculator.

Facit CM2-16

Facit CM2-16, hand-driven, keyboard-set, pinwheel calculator, 1959-1967.

Facit ESA-01

Facit ESA-01, electrically-driven, keyboard-set, pinwheel calculator, 1949-1956. Featured calculator.

Facit T

Facit T, hand-driven, keyboard-set, pinwheel calculator, 1932-1939. The first Facit keyboard-set pinwheel calculator.


Famosa

Famosa

Famosa, Pinwheel calculator. c1960s.


Felt & Tarrant (U.S. manufacturer, see Comptometer)


Friden (U.S. manufacturer)

Friden SR101

Friden SR101, can extract quare roots.


Fuller (Made by W.F. Stanley & Co., London)

Fuller calculator

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.


Golden Gem

Golden Gem

Golden Gem, chain adder. Featured calculator.


Imperial (Imperial Typewriter Co., British company, became part of the Litton Industries group)

Imperial Office Master

Imperial Office Master, hand-operated, 10-key add-lister, 1970, Germany. Featured calculator.

Imperial Office Master Electric

Imperial Office Master Electric, electrically-driven, 10-key add-lister, 1970, Germany. Featured British calculator.


Kingson

Kingson Four-Rule

Kingson Four-Rule front, rear, combined 'Addiator' and slide-rule, c1960s, Hong Kong. Featured calculator.

Kingson Pocket Calculator

Kingson Pocket Calculator, Sterling currency 'Addiator', c1960s, Hong Kong. Featured calculator.


London Computator Corporation (See Bell Punch Co.)


Madas (Multiplication, Automatic Division, A ddition, and Subtraction, made in Switzerland by H.W. Egli)

Madas 20AZG

Madas 20AZG, electrically driven stepped gear calculator with automatic multiplication and division, 1950s/1960s. Featured calculator.


Marchant (U.S.A. company, for more details and calculator serial numbers see Marchant in the Calculator Companies section)

Marchant

An early keyboard model Marchant, photo 2.

Marchant 8CM

Marchant 8CM, electrically driven.

Marchant 8D

Marchant 8D, 4-functions, electrically driven, c1942.

Marchant Figurematic

Marchant Figurematic, 4-function, full-keyboard, 1950s/60s.

Marchant H6

Marchant H6, photo 2.

Twin Marchant

Twin Marchant. Featured in the article "The Twin Marchant and its place in history".


MBC

MBC Pocket Calculator

MBC Pocket Calculator, "Addiator"-type.


Melitta (German company)

Melitta

Melitta, pinwheel calculator, introduced c1925.

Melitta

Melitta, pinwheel calculator, c1960s.


Monroe (U.S. company)

Monroe LN-160X

LN-160X, stepped-gear calculator. Featured calculator.


Muldivo (British marketing company, see the Muldivo section of this site)

Muldivo

No model number, made in France, 1920s. Featured British calculator.

Muldivo AE

Muldivo AE (made by Thales), Germany. Featured British calculator.

Muldivo DER

Muldivo DER (made by Thales), Germany. Featured British calculator.

Muldivo Mentor

Muldivo Mentor, (re-badged Walther WSR160), pinwheel calculator, Germany, 1960s. Featured calculator.


Nippon Calculator (Japanese manufacturer, changed its name to Busicom)

Busicom / Nippon Calculator HL-21

Nippon Calculator / Busicom HL-21, pinwheel calculator, 1963. Featured calculator.

NCM SM-21 calculator

Nippon Calculator SM-21, pinwheel calculator, 1956. Featured calculator.


Numeria

Numeria 7903

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).


Odhner

Odhner

Odhner, pinwheel calculator, c1935-1945, Sweden. Featured calculator.

Modern Odhner

Odhner, pinwheel calculator, c1960s, Sweden.


Olivetti (Italian manufacturer, also sold in the U.S.A. under the Underwood name)

Olivetti Audit 413

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.

Olivetti Electrosumma 22R

Olivetti Electrosumma 22R, Sterling currency, electrically driven, 10-key add-lister,  Italy, 1960s. Featured calculator.

Olivetti Quanta 20

Olivetti Quanta 20, inside 1, inside 2, Sterling currency (£sd), electrically driven, "10-key add-lister", Italy, 1960s. Nov 16.

Olivetti Simplex

Olivetti Simplex, inside 1, inside 2, Sterling currency (£sd), hand-operated, "10-key add-lister", Italy, 1960s. Nov 16.

Olivetti Summa Prima

Olivetti Summa Prima, inside 1, inside 2, Sterling currency (£sd), hand-operated, "10-key add-lister, Italy, 1960s". Featured calculator .

Olivetti Summa Prima 20

Olivetti Summa Prima 20, inside 1, inside 2, decimal, hand operated, 10-key add-lister, Italy, 1960s. Nov 16.

Olivetti Summa Prima 20 £sd

Olivetti Summa Prima 20 (£sd), inside 1, inside 2, Sterling currency (£sd), hand operated, "10-key add-lister", Italy, 1960s. Nov 16.


Otis King (cylindrical slide-rules manufactured in Britain by Carbic Ltd.)

Otis King model L

Otis King model L, cylindrical slide-rule, 1920s to 1970s.  Displayed here since it was a competitor to the early hand-held electronic calculators. Featured calculator .


Plus (See Bell Punch Co.)


Pocket Adding Machine

Pocket Adding Machine

Pocket Adding Machine, sterling currency "Addiator", 5 £ decades, 86x128mm/3.4x5", similar to Pro Calculo.


Problem Solver

Problem Solver

Problem Solver, is a relabelled Olivetti Summa Quanta 20, electrically driven 10-key add-lister, dating from the 1960s. If you have any information about why this is labelled "Problem Solver" please get in touch.


Produx

Produx Multator

Produx Multator photo 1, photo 2, c1960s.


Remington (also manufactured typewriters and were part of Sperry Rand)

Remington 221

Remington 221, Electrically-driven, 10-key add-lister. c1960s.


R C Allen

R C Allen

R C Allen, full-keyboard add-lister. c1950s-1960s.


Ricoh (Japanese company)

Ricomac 218

Ricoh Ricomac 218 ½, ten-key electro-mechanical add-lister.


Rolls Record

Rolls Record - 6

Rolls Record - 6, photo of subtraction side, stylus operated "Addiator"-type decimal calculator, 6 decades, addition on front, subtraction on back.

Rolls Record - 9

Rolls Record - 9, photo of subtraction side, stylus operated "Addiator"-type decimal calculator, 9 decades, addition on front, subtraction on back.


S & N (Seidel & Naumann)

Sterling currency adding machine

Sterling currency adding machine. From 1910 - .


Smith Corona (U.S. company, also Smith Corona Marchant (SCM))

Smith Corona

Smith Corona model unknown, hand-operated, full-keyboard add-lister. Featured calculator.

Smith Corona SCM 1011 CB

Smith Corona SCM 1011 CB, electrically driven, 10-key add-lister, 1960s, Japan. Featured calculator.


SUN (See S & N)


Sumlock (See Bell Punch Co.)


Thales

Thales

Thales, c1950s-1960s.


TIM (Time Is Money)

TIM

TIM (Time Is Money) stepped-drum calculator, early model, with number setting by sliders.


Triumphator

Triumphator CRN2

Triumphator CRN2, pinwheel calculator, ~early-1960s, East Germany (DDR).


Victor

Victor full-keyboard add-lister

Victor, full-keyboard add-lister, c1950s-1960s, U.S.A.

Victor Tallymaste

Victor Tallymaster (model 67 57 50), inside 1, inside2, electro-mechanical 10-key add-lister, U.S.A. Nov 16.


Walther (German manufacturer)

Walther WRS160

Walther WRS160 (badged as the Muldivo Mentor), pinwheel calculator, 1960s. Featured calculator.

Thanks to those who have supplied photographs for inclusion in this photographic library, as credited on the photographs.

We welcome your feedback, please contact us.
We also invite you to submit photos for possible use on this site. We're always looking for new "slices" of the past up to 1980.

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2017  except where noted otherwise.