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 5945-00-558-9155
NSN 5915-00-411-3229
NSN 5905-00-415-6322
NSN 5945-00-928-1194
NSN 5835-00-034-4976
NSN 5905-00-591-0025
NSN 5996-01-647-4924
NSN 5915-00-357-7316
NSN 6320-00-456-2092
NSN 6685-01-398-0189
NSN 6650-01-417-7450
NSN 6150-00-900-3018