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 5910-00-132-2301
NSN 7035-01-178-5631
NSN 6645-00-108-6479
NSN 5935-00-518-5027
NSN 6320-00-857-4073
NSN 6105-01-555-7388
NSN 6650-01-168-8451
NSN 5950-01-500-2223
NSN 6220-00-968-0235
NSN 6110-01-442-8080
NSN 5999-00-905-9690
NSN 6135-01-247-5660