An instrument for determining the torque on a shaft, and hence the horse power of an engine, esp. of a marine engine of high power, by measuring the amount of twist of a given length of the shaft. Called also
candle meter, common meter, coulomb meter, cubic meter, electric meter, exposure meter, gas meter, gravity meter, heroic meter, light meter, meter, meter maid, meter reading, parking meter, phase meter, postage meter, power meter, square meter, torsion, torsion balance, torsion electrometer, torsion galvanometer, torsion head, torsion indicator, water meter