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 5920-01-351-5535
NSN 4140-00-078-9357
NSN 5935-01-550-1883
NSN 5985-00-558-7770
NSN 5925-01-609-9826
NSN 5905-00-888-5680
NSN 5965-00-182-7928
NSN 5985-01-266-4820
NSN 6105-00-965-7828
NSN 6620-00-031-8601
NSN 5925-00-434-5484
NSN 2925-01-532-8445