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 5990-01-136-4068
NSN 6610-01-400-3880
NSN 6150-00-518-1402
NSN 5990-00-861-7986
NSN 6240-01-004-9634
NSN 5998-01-400-6739
NSN 5999-01-096-5829
NSN 5999-00-158-5118
NSN 5905-00-463-9522
NSN 6145-01-422-8603
NSN 5990-01-432-9844
NSN 6105-00-915-6601