Mechanical Calculators

 

 

Abacus
Addiator Hexadat
Addiator Octadat
ADM Schubert DRV Pin Wheel Calculator
Adwel Adding Machine
Adwel W504 Full-keyboard Adding Machine
Brunsviga 13RM
Burroughs mechanical desk top calculator
Busicom Mechanical Calculator HL-21
Facit 1004 Mechanical Calculator
Facit Model TK Mechanical Calculator
Friden Model H8 Calculator
Kingson Pocket Calculator
Lagomarsino Numeria Model 7203
Magic-Brain Calculator
Magic-Brain Calculator (2)
Monroe Educator
Multo 13-5150 Pinwheel Calculator
Multo Addo Pinwheel Calculator
Numeria Modello 9200
Olivetti Summa 15
Olivetti Summa Prima 20
Olivetti Summa Prima 20 (pre-decimal)
Original Odhner model 227 Pinwheel calculator
Sterling Currency Addometer
Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund