Commodore personal minicomputer (electronic calculator). Model 796M
circa 1979
Prinztronic SC1500M electronic calculator
circa 1980
Brother Procol 508AY
circa 1977
EL-112
circa 1976
Elsimate EL-8015
circa 1978
HP 55
1974
Lloytron Accumatic 340 with case, s/n 102904, 1976
1976
Sharp EL-8010 with case s/n 50800247, 1973
1973
Novus 4515 Mathematician PR with case, s/n 1008015
Hewlett-Packard 55 with case, s/n 1503S01963, 1975
1975
"Posographe" photographic exposure calculator
Monroe 360/65 bond trader
1976
Hewlett Packard HP 9810A programmable desktop calculator
1971
Olivetti Logos 270 electric printing calculator
circa 1970
Rockwell 41OP electronic printing calculator
Addiator "Arithma" Calculator
1960-1965
Seiko combined wristwatch and electronic calculator
1978
Rotating Calculator
1922-1927
Protein & Calorie Calculator for Caterers
1980-1995
Commodore 774D Calculator
1973-1975
Casablancas Textile Twist Calculator
1900-1930
Isotope calculator designed by AERE
1960
Addo adding machine model 16
1940-1959
Multi-function preprogrammed Scientific notation calculators
1975
Rotch true-wind calculator, for use at sea
1903
Integrator Unit from Hartree Differential Analyser
1936
Mechanical Calculator
1925-1935
Mechanical Calculator
1915-1925
Solar-powered electronic calculator
1990
Key-Set Mechanical Calculator
1950
Bell Punch "Anita" Electronic Calculator
1969-1971
Mechanical Calculator
1915-1925
Sharp Electronic Calculator
1965-1975
Textile calculator made by Fowler Ltd
1910-1914
L5000 Accounting Machine
1970-1979
Fuller cylindrical calculator on stand made by W. F. Stanley & Co. Ltd
circa 1940
Hitachi KK562 electronic desktop calculator
Elsimate Compet EL-8100 Calculator
1975-1980
HP 35 Electronic Calculator
1973
Casio HL-807 Calculator
1980
Portable Electronic Calculator
1970
HP22
1975
Electro-mechanical calculator by Carl Walther
1935-1945
Commodore C110, with case s/n G1095, 1971
1971
Graphic Icon Organiser
1996
Novus 6035 Statistician PR with case, s/n 1008291
Hewlett-Packard 25
1975
Curta model 1 rotary calculator
1955-1965
Radiac slide rule by Blundell Rules Limited
1960-1972
Advance Mini Executive pocket electronic calculator
1972