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 4140-01-396-2142
NSN 6645-01-633-1852
NSN 6620-01-023-2938
NSN 6130-01-393-2990
NSN 5998-01-047-2843
NSN 5990-01-462-1617
NSN 5835-01-302-6844
NSN 5985-01-398-8926
NSN 6220-01-627-0038
NSN 6145-01-605-0948
NSN 5975-00-905-5194
NSN 5855-01-045-9728