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 5930-01-040-5600
NSN 5935-01-605-1403
NSN 6130-00-188-3709
NSN 6620-00-193-9503
NSN 5945-01-381-1089
NSN 5935-01-499-5189
NSN 6105-01-242-9210
NSN 5935-01-067-5877
NSN 6135-01-022-5427
NSN 5985-01-345-9293
NSN 6610-01-025-4718
NSN 5945-01-178-3500