G & J Weir Mechanical Counter
A Harding’s Improved Counter, made by G & J Weir Ltd of Cathcart, Glasgow. Weir’s make pumps and are still in business: https://catchingphotons.co.uk/blog/industrial/proper-scottish-engineering/
Tag: mechanical
Curta Type II Mechanical Calculator
A Type II Curta mechanical calculator, made in Lichtenstein by Contina AG. A larger version with more registers than the Type I., but with the same ingenious handheld design.
Curta Type I Mechanical Calculator
A Type I Curta handheld mechanical calculator, the smallest mechanical calculator ever made – designed by Kurt Herzstark in the Buchenwald concentration camp, he survived because the Nazis wanted to present his invention to Hitler after the war.