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 2925-00-177-6969
NSN 6240-01-218-5187
NSN 6650-00-862-2142
NSN 5998-01-465-3061
NSN 5905-01-247-0804
NSN 6150-01-200-5228
NSN 5935-00-604-6219
NSN 6685-01-432-7156
NSN 5975-01-593-4387
NSN 6110-01-322-4659
NSN 6320-00-593-0379
NSN 6610-01-025-8283