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• n  a measuring instrument for determining the specific gravity of a liquid or solid
• n  a measuring instrument for measuring variations in the gravitational field of the earth

• He has put together 15 crack geologic field parties, ten gravimeter and 15 seismographic crews, 36 wildcat rigs.
• All of the experiments were finally set up, but it was learned later that a key instrumentthe surface gravimeterhad jammed.

• hydrometer
• gravity meter