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 5905-01-356-1609
NSN 6110-00-271-9928
NSN 6685-00-663-9000
NSN 5945-01-495-8076
NSN 6240-00-043-2266
NSN 2925-00-078-0525
NSN 4140-00-234-8524
NSN 6135-01-051-7836
NSN 5960-01-219-5504
NSN 6610-00-942-5981
NSN 5996-00-208-6023
NSN 6645-01-251-7887