Horse Power Computer for Steam, Gas & Oil Engines, explanatory booklet plus cardboard computer in original box. Henry A. Golding.
Horse Power Computer for Steam, Gas & Oil Engines, explanatory booklet plus cardboard computer in original box
Horse Power Computer for Steam, Gas & Oil Engines, explanatory booklet plus cardboard computer in original box

Horse Power Computer for Steam, Gas & Oil Engines, explanatory booklet plus cardboard computer in original box.

Charles Griffin & Company, London, 1908 12 pages booklet, tissue paper protecting the 3-wheel circular computing instrument, in white cardboard box.

Condition: Booklet and instrument in very good condition, slight yellowing to the cardboard computer; in original white cardboard box, box has wear and chipping to the paper covers, slightly crushed appearance not affecting internal contents.

Price: $25.00

Item Description

Explanatory Pamphlet accompanying this Instrument -- The computer is an ingenious form of mechanical calculator for solving the numerous problems connected with the power, size and speed of steam engines of all kinds. Its action is based upon the well-known principle of logarithmic calculation... the computer consists of four concentric discs, A B C and D, suitably provided with logarithmic scales to represent various quantities, such as boiler pressure, speed, size, and power... (from the booklet).