Calculator, The British Calculator with leather-bound case
Accounting machine, The Standard Desk Calcumeter, Model A: 09-025A
Electronic programmable calculator, Wang, 720C series
Spiral slide rule, Stanley Great Turnstile, with mahogany box and handle
Arithmometer, Tate's Improved
Spiral slide rule, Stanley Optician Great Turnstile, with Bakelite handle
Rotary calculator, Monroe "Executive", Model LN-160X
Mechanical pinwheel calculator, Brunsviga, Model 13RK
Arithmometer, Thomas de Colmar
Mechanical calculator, Burroughs
Mechanical calculator, Marchant, FigureMatic 8ADX
Electronic desktop calculator, Singer, Model Friden 1115
Arithmometer, Tate's, The Millionaire Calculating Machine
Electronic desktop calculator, Olympia, Model CD 502
Electronic desktop calculator, Sharp, Model Complet 32
Desktop electronic calculator, Olivetti, Model Elettrosumma 23
Mechanical pinwheel calculator, Brunsviga Model 13RK, with instructional guide
Electromagnetic desktop calculator, Odhner
Electronic calculator, Friden Singer, Model EC1114 with instructional guide
Mechanical calculator, Burroughs Adding Machine Co.
Electromechanical calculator, Feiler Imperial Office Master
Computers
Weights & measures
Punched card systems
Abaci
