Proof mass

A proof mass or test mass is a known quantity of mass used in a measuring instrument as a reference for the measurement of an unknown quantity.

A proof mass that deforms a spring in an accelerometer is sometimes called the seismic mass.

A mass used to calibrate a weighing scale is sometimes called a calibration mass or calibration weight.

单词	Seismic mass
释义	Seismic mass 英语百科 Proof mass A proof mass or test mass is a known quantity of mass used in a measuring instrument as a reference for the measurement of an unknown quantity. A proof mass that deforms a spring in an accelerometer is sometimes called the seismic mass. A mass used to calibrate a weighing scale is sometimes called a calibration mass or calibration weight.
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Seismic mass