pandynamometer

Century Dictionary and Cyclopedia

1. n. In mech., an instrument for indicating and recording the angular torsion of a rotating shaft which transmits power, or the moment of the driving-couple which turns the shaft, as a basis for the computation of the power transmitted. It consists of two toothed bevel-wheels, keyed to different points of the shaft, which change their relative positions angularly by the twisting of the shaft. An intermediate toothed bevel-wheel, Supported on an arm keyed to the shaft and intermeshed with the other wheels, communicates motion to the pencil of a recording-apparatus.