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 5915-01-581-9472
NSN 5999-01-199-4039
NSN 6620-01-656-1896
NSN 7035-01-452-9086
NSN 6645-00-757-5396
NSN 6610-00-753-2281
NSN 5945-01-216-6317
NSN 6220-01-409-0451
NSN 5905-01-463-6533
NSN 6110-01-201-7880
NSN 5996-00-925-1953
NSN 6105-00-232-1410