Jean_LAMESCH_Sliderules_Collection_BOX_JL10

1762_HORSE_POWER_COMPUTER

1762_HORSE_POWER_COMPUTER

A British HORSE POWER COMPUTER (for steam engines)calculator from Charles GRIFFIN & Co., London., 1908. A 12 page manual is included. Link with explanations and examples here. Made from cardboard with 3 rotating parts. Case is cardboard, in bad shape.