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 5920-01-499-0026
NSN 5920-01-279-0419
NSN 6320-01-255-2096
NSN 5930-01-634-0659
NSN 5905-00-590-6318
NSN 6220-00-517-9300
NSN 5999-00-929-4963
NSN 5985-01-576-8687
NSN 6620-01-541-9487
NSN 5960-01-258-6708
NSN 5985-00-073-1654
NSN 5855-01-408-3154