MIL-STD-2142A, DEPARTMENT OF DEFENSE TEST METHOD STANDARD: MAGNETIC SILENCING CHARACTERISTICS, MEASUREMENT OF (06 AUG 1990) [SUPERSEDING DOD-STD-2142]., This standard establishes requirements for methods of measuringand determining the magnetic characteristics (permeability; electrical conductivity; ferrous, stray and eddy current magnetic field strengths) of materials and equipment.