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 5960-01-385-4333
NSN 5960-01-170-2258
NSN 5925-01-077-6316
NSN 7035-01-296-4737
NSN 6145-01-301-4121
NSN 5985-00-166-0811
NSN 4140-01-538-8186
NSN 5935-01-133-2912
NSN 5895-01-446-7320
NSN 5895-00-182-7544
NSN 5930-01-600-5397
NSN 6610-01-415-1623