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 4140-00-659-8283
NSN 5855-01-088-4699
NSN 7035-00-585-2113
NSN 6110-01-381-1269
NSN 5985-01-206-9843
NSN 2925-01-587-3956
NSN 5910-00-255-5679
NSN 2925-00-617-0826
NSN 6135-01-563-4445
NSN 5910-00-195-5606
NSN 6685-00-403-1226
NSN 5835-01-246-0972