gravity meter(n = noun.artifact) gravimeter - a measuring instrument for measuring variations in the gravitational field of the earth;
is a kind of measuring device, measuring instrument, measuring system

candle meter, center of gravity, centre of gravity, common meter, coulomb meter, cubic meter, electric meter, exposure meter, gas meter, gravity, gravity bomb, gravity fault, gravity gradient, gravity wave, heroic meter, light meter, meter, meter maid, meter reading, parking meter, phase meter, postage meter, power meter, solar gravity, specific gravity, square meter, theory of gravity, torsion meter, water meter