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 5990-00-582-0342
NSN 6110-01-589-2151
NSN 5998-00-545-4290
NSN 5960-01-462-7704
NSN 6620-01-554-6571
NSN 5965-01-483-1610
NSN 6685-00-501-6501
NSN 5945-01-378-8164
NSN 5935-01-514-5091
NSN 6145-00-466-4068
NSN 6610-01-480-0586
NSN 6645-01-253-1950