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 6320-01-211-2574
NSN 4140-01-475-8930
NSN 5895-00-862-5564
NSN 4140-01-602-0616
NSN 5990-01-386-5561
NSN 5905-01-256-9543
NSN 5920-01-381-9310
NSN 5950-01-221-5443
NSN 5930-01-348-8962
NSN 5915-01-148-0095
NSN 5915-01-089-4511
NSN 5999-01-408-6881