Muldivo 'Mentor' calculator model WSR, 160 c1955.
circa 1955
Samuel Morland's calculating machine
1666-1695
ADM Teacher
1950-1970
Adding machine "The Adder" no. 5766
Mear's gas flow calculator.
'Precisa' desk top calculator, c. 1945
1945
Nippon mechanical calculator model HL-21
1960-1970
FACIT electrical calculating machine model ESA-O
1950-1955
Contex 30 calculator with handbook
1970-1975
Contex 9 figure adding machine
1945-1955
Conto adding machine for eight figures
1905-1910
Lipsiaddi adding machine with vendor's plate: Heinrich Daemen
1930-1940
Comptometer by Bell Punch Ltd., Model 993S
1960-1970
Underwood Sundstrand printing calculator with typewriter platen
1930-1940
Plus Rapid adding machine, standard farthings model
1939
Contex-55 electromechanical calculating machine
1950-1960
Calculating machine for lathe work
1920-1930
Contex-10 manual calculating machine
1950-1960
Contex 2 calculator
1970-1975
Anita electronic calculating machine, model LT4
Callender cable calculating machine
circa 1904
Automultiplicateur Eggis
1918-1922
Reuter's multiplying and dividing machine
1908-1920
Facit mechanical calculator
1951
Monroe 88N-213 full keyboard electric desktop calculator
1950-1965
Electric adding machine, 1965
1965
Cover for Triumphator Calculating Machine
1945-1965
Adding machine by London Computator Ltd. model 509/D/50
1915-1925
Program bar for National Class 31-32 accounting machine
1884-1974
Program bar for National Class 31-32 accounting machine
1884-1974
National Class 31-32 accounting machine
1884-1974
Program bar for National Class 31-32 accounting machine
1884-1974
Mechanical calculator for centre of gravity of Hotspur aircraft
'Sumlock' adding / calculating machine no. 912/S/3475
1950
Anita electronic calculating machine
"Arithmograph" of Leon Bollee
1895-1900
Calculating machine invented by Charles Stanhope in 1777
1777
Program bar for National Class 31-32 accounting machine
1884-1974
Program bars for National Class 31-32 accounting machine
1884-1974
IME - 86 electronic calculating machine
Unitas calculating machine
1900
Heureka adding machine, no.684
1907-1920
Olivetti Divisumma Tetractys. Superautomatic printing calculator with two registers
1962
Anita Mk VIII Electronic Desktop Calculator
circa 1963
Calculating machine invented by Sir Samuel Morland
1664
Triumphator Calculating Machine
1945-1965
Two Russion calculating machines: `Contex 2' and `Contex 30'. The first with a handbook
1970-1975
Class 1 Burroughs calculating machine
Calculating machine
1880-1884