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DBpedia 2014

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Matches in DBpedia 2014 for { ?s ?p 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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