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 6105-01-223-5400
NSN 5960-01-292-0027
NSN 5835-00-568-2956
NSN 6105-01-131-1408
NSN 6320-01-155-8295
NSN 6620-01-152-0936
NSN 5965-00-553-6898
NSN 2925-00-869-1451
NSN 5999-01-202-8282
NSN 5990-00-285-1948
NSN 6135-00-505-0679
NSN 6685-01-343-9622