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 6145-01-620-5837
NSN 5925-00-421-2802
NSN 5925-01-237-2501
NSN 5925-01-114-8254
NSN 6110-00-113-1415
NSN 6135-00-073-8939
NSN 6105-00-019-1727
NSN 6135-01-483-1501
NSN 5975-00-269-4365
NSN 6145-00-500-1835
NSN 5975-01-142-9745
NSN 2925-01-295-2017