An instrument which measures the ratio of electrical power with reference to a predetermined value and is calibrated in units of sound intensity, usually decibels. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. if other than audio frequency ranges, see meter, noise level.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5990-01-361-6424
NSN 5998-00-465-6284
NSN 6610-00-205-7352
NSN 5996-01-254-1790
NSN 5915-00-779-5876
NSN 6145-01-305-1518
NSN 5990-01-501-5409
NSN 4140-01-461-7885
NSN 6320-00-483-0451
NSN 5920-01-181-6776
NSN 6650-01-646-6909
NSN 5960-00-137-7692