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 6685-00-392-9110
NSN 5910-01-480-5700
NSN 5905-01-645-3041
NSN 5910-01-515-3419
NSN 6130-01-467-4591
NSN 5835-00-614-0650
NSN 7035-00-104-7613
NSN 6320-01-350-0320
NSN 5998-01-534-1725
NSN 5998-01-582-6135
NSN 6645-00-609-7214
NSN 5835-01-138-0181