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 5960-01-041-2690
NSN 6620-01-386-5914
NSN 5855-01-256-2551
NSN 6145-01-589-6829
NSN 5905-00-944-8001
NSN 5965-00-661-0469
NSN 5998-00-528-0615
NSN 6150-00-818-1971
NSN 5998-01-551-0877
NSN 5999-01-596-3085
NSN 6135-00-477-8847
NSN 6110-00-672-2863