Tag: ASTM E74 primary standard|ASTM E74 standards|deadweight primary standards|primary standards|secondary standards|what is a primary standard|What is Class A|what is Class AA
Primary Force Standards (As Defined per ASTM E74) Morehouse Deadweight Machine ASTM E74 Standard Practices for Calibration and Verification for Force-Measuring Instruments. ASTM E74 defines a primary force standard as a deadweight force applied directly without intervening mechanisms such as levers, hydraulic multipliers, or the like, whose mass has been determined by comparison with reference […]
