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 5930-01-212-8939
NSN 6110-00-832-8280
NSN 2925-00-167-6762
NSN 4140-00-519-2781
NSN 6145-01-282-3464
NSN 6150-00-081-2063
NSN 5960-01-389-4055
NSN 5855-01-258-6180
NSN 5960-01-495-0859
NSN 5950-01-553-5950
NSN 5960-01-385-1628
NSN 5985-01-614-4975