ABSTRACT
Mass and weight are often used interchangeably; however, they are different. Mass is a quantitative measure of inertia of a body at rest. The electric current is then measured across a precision sense resistor and converted into a mass unit reading and displayed on the digital readout A variation of the latter is the new generation of industrial scales, laboratory balances, and mass comparators. The authors have weighed ourselves many times, and most of us have made weight or mass measurements in school. Applying the buoyancy correction to the measurement requires the introduction of the term "apparent mass." Calibration reports from the National Institute of Standards and Technology will report mass in three ways: True Mass, Apparent Mass versus Brass, and Apparent Mass versus Stainless Steel. Because of the precision of this weighing technique, it is only appropriate to use it on precision balances or mass comparators.
