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 6320-01-627-1594
NSN 5965-01-381-2998
NSN 5999-00-290-5898
NSN 4140-00-623-0248
NSN 6110-01-519-0386
NSN 5975-01-061-9919
NSN 6645-01-008-2720
NSN 2925-01-633-4048
NSN 5990-01-525-1674
NSN 5975-01-555-0547
NSN 5905-01-305-0760
NSN 6645-01-202-2993