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 5920-01-601-5539
NSN 5998-00-038-8334
NSN 5935-01-352-5858
NSN 6130-01-382-5832
NSN 5998-01-056-4956
NSN 6620-01-116-3983
NSN 5999-01-012-1934
NSN 5925-00-791-4058
NSN 5975-00-959-6187
NSN 5895-01-472-3672
NSN 6130-01-485-2464
NSN 5910-01-100-2053