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 5920-00-850-2407
NSN 5905-00-214-1815
NSN 5950-01-383-5947
NSN 2925-01-542-1865
NSN 5935-01-010-4640
NSN 5996-01-656-2461
NSN 5895-00-924-6212
NSN 5996-01-375-8769
NSN 6650-00-157-4217
NSN 5998-01-300-5041
NSN 5930-01-206-1791
NSN 6130-01-517-2151