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 5960-01-192-7710
NSN 6240-00-141-6143
NSN 5990-01-411-5930
NSN 6610-01-093-4710
NSN 5855-00-427-7848
NSN 2925-01-426-3410
NSN 5999-01-490-1779
NSN 5990-01-277-9753
NSN 6130-01-281-1700
NSN 6135-00-078-9931
NSN 6110-01-391-2038
NSN 2925-01-359-4027