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 5965-01-531-7758
NSN 6220-01-170-4650
NSN 6220-00-999-1911
NSN 5998-01-323-5205
NSN 6135-01-316-9794
NSN 5996-01-525-7628
NSN 6645-01-098-1179
NSN 6105-01-010-0827
NSN 5925-00-896-0350
NSN 4140-01-571-6600
NSN 6105-00-246-4425
NSN 6220-00-420-8166