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 5975-01-081-6299
NSN 6110-01-032-1294
NSN 6145-01-347-1609
NSN 6610-01-170-2905
NSN 6105-01-089-4956
NSN 6620-01-148-1675
NSN 6320-01-652-3806
NSN 5915-01-278-9049
NSN 5935-01-514-7823
NSN 5920-01-146-4503
NSN 5915-01-494-0651
NSN 6685-01-314-3636