Muldivo 'Mentor' calculator model WSR, 160 c1955.
circa 1955
ADM Teacher
1950-1970
`Precisa' desk top calculator, c. 1945
1945
Mear's gas flow calculator.
Contex 30 calculator with handbook
1970-1975
FACIT electrical calculating machine model ESA-O
1950-1955
Contex-55 electromechanical calculating machine
1950-1960
Nippon mechanical calculator model HL-21
1960-1970
Adding machine "The Adder" no. 5766
Contex 9 figure adding machine
1945-1955
Callender cable calculating machine
circa 1904
IME - 86 electronic calculating machine
Contex-10 manual calculating machine
1950-1960
Calculating machine for lathe work
1920-1930
Underwood Sundstrand printing calculator with typewriter platen
1930-1940
Conto adding machine for eight figures
1905-1910
Plus Rapid adding machine, standard farthings model
1939
Reuter's multiplying and dividing machine
1908-1920
Mechanical calculator for centre of gravity of Hotspur aircraft
Lipsiaddi adding machine with vendor's plate: Heinrich Daemen
1930-1940
Heureka adding machine, no.684
1907-1920
Contex 2 calculator
1970-1975
Unitas calculating machine
1900
Olivetti Divisumma Tetractys. Superautomatic printing calculator with two registers
1962
Anita electronic calculating machine, model LT4
Automultiplicateur Eggis
1918-1922
Comptometer by Bell Punch Ltd., Model 993S
1960-1970
Anita Mk VIII Electronic Desktop Calculator
circa 1963
Calculating machine
1880-1884
"Sumlock" adding/calculating machine no.912/S/3475
1950
Ultra electromechanical calculating and listing machine by Oerlikon
Duoelectric S/508144 (electric comptometer)
1955-1965
Adding machine by London Computator Ltd. model 509/D/50
1915-1925
Class 1 Burroughs calculating machine
Two Russion calculating machines: `Contex 2' and `Contex 30'. The first with a handbook
1970-1975
Anita electronic calculating machine 1011.IC.724
"Arithmograph" of Leon Bollee
1895-1900
Calculating machine for bookkeeping
1935