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 6610-00-680-8325
NSN 4140-00-937-5028
NSN 5930-00-017-9273
NSN 5990-00-467-7431
NSN 6685-01-617-6049
NSN 5915-01-116-1813
NSN 5925-01-415-8812
NSN 6240-01-462-1874
NSN 5998-01-525-7333
NSN 5930-00-378-0374
NSN 2925-01-437-9041
NSN 6145-00-466-4068