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 6145-01-156-0284
NSN 5895-01-445-2270
NSN 5996-01-654-7645
NSN 6610-01-088-5871
NSN 5996-00-902-7394
NSN 6320-01-519-8767
NSN 5915-01-576-8219
NSN 5935-00-544-5216
NSN 6620-01-435-2784
NSN 5975-00-761-5602
NSN 6110-00-921-6810
NSN 6240-01-544-6359