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 5935-01-078-7260
NSN 2925-01-027-1293
NSN 6620-01-371-1655
NSN 6130-01-415-3345
NSN 5895-01-418-9656
NSN 6145-00-284-1514
NSN 4140-01-482-2053
NSN 5855-00-114-4954
NSN 5990-00-522-3425
NSN 6130-01-614-1755
NSN 5975-01-019-5123
NSN 5920-00-949-3468