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 5935-01-481-6896
NSN 7035-01-173-5503
NSN 6220-00-393-4222
NSN 7035-01-114-8550
NSN 5855-01-302-5493
NSN 5945-01-225-8298
NSN 5915-01-604-6769
NSN 5985-01-155-0814
NSN 5999-01-381-6159
NSN 6135-01-479-4020
NSN 2925-01-327-3069
NSN 6650-00-299-9681