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 5990-01-570-5471
NSN 5975-01-385-7009
NSN 5895-01-559-3108
NSN 6240-01-068-3491
NSN 6685-00-720-3525
NSN 5996-01-235-1050
NSN 5895-01-518-0116
NSN 6110-00-186-2542
NSN 6240-00-740-8901
NSN 5855-01-364-1005
NSN 5990-00-362-1453
NSN 6620-01-568-5226