Jaap Scherphuis
Mechanical calculators, magic tricks, and any other cool geeky things that I want to show.
Schäffer & Budenberg revolution counter
The Dixi adding machine
The Britannic calculator by Guy's Calculating Machines
A wooden Comptometer
The Multo model 3 calculator, version 2
The Hexadat addiator
An early Addiator
The Facit Standard mechanical calculator
The Adall Calculator
Velos Lightning and GEMS Automatic Numbering Machines
Odhner's Arithmometer mechanical calculator
The Astra "Baby" Adding Machine
The Rheinmetall SASL mechanical calculator
Saldorita Adding Machine
Monforts industrial counter with printing mechanism
The Marchant Pony pinwheel calculator
The Victor series 2 adding machine
The Portable Adding Machine
The Addo Model 2 adding machine
The Hamann Delta mechanical calculator
The Odhner LuSiD, a strange pinwheel calculator for British currency
The Bair-Fulton Arithmetician Calculator No. 6
The Kohner Easy Adder
The Scotsman SR1 mechanical calculator
The O.J. Adder
The Comptometer 992 mechanical calculator
Consul, The Educated Monkey
The Benton Tally Register
The Quixsum Fractional Adding Machine
De Kleine Rekenmeester