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 5935-01-251-2825
NSN 5999-01-557-2968
NSN 5935-00-555-2633
NSN 6130-01-576-7993
NSN 5855-00-471-6002
NSN 5998-01-358-6532
NSN 6685-01-082-9117
NSN 5960-00-297-7099
NSN 6135-01-205-5965
NSN 6620-01-246-4314
NSN 2925-01-136-1095
NSN 4140-00-419-0631