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 5999-01-180-9754
NSN 6610-01-064-5792
NSN 5990-01-205-5937
NSN 5998-00-661-0380
NSN 4140-01-524-8106
NSN 6645-00-925-0111
NSN 5935-00-910-1088
NSN 5855-01-612-1834
NSN 6240-00-005-4869
NSN 5965-01-524-8347
NSN 5855-01-281-9700
NSN 2925-01-187-5480