Mechanical Calculators

 

 

Abacus
Addiator Hexadat
Addiator Octadat
Addo Multo Pinwheel Calculator
Adwel W504 Full-keyboard Adding Machine
Brunsviga 13RM
Burroughs Mechanical Desk Top Calculator
Busicom Mechanical Calculator HL-21
Facit 1004 Mechanical Calculator
Friden Model H8 Calculator
Kingson Pocket Calculator
Monroe Educator
Numeria Modello 9200
Olivetti Summa Prima 20
Olivetti Summa Prima 20 (pre-decimal)
Produx Calculator
Sterling Currency Addometer

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