A mechanical device used for calculating area on an arbitrary shape.
Tag: calculator
Pritz Hatchet Planimeter
My first planimeter, very simple and very demonstrative to understand how a mechanical device can calculate area.
Lego computer : Digicomp
The digicomp was a mechanical computer sold as a plastic toy in 1963. Capable to count, multiply, divide, depending of how it is programmed.
Integraph : Graphic Planimeter
An Integraph is an instrument used in mathematics for plotting the integral of a graphically defined function.
