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 6650-01-189-7040
NSN 7035-00-870-0290
NSN 6110-00-066-9614
NSN 6150-00-947-0673
NSN 7035-01-155-0153
NSN 5945-00-562-8184
NSN 5945-01-517-0004
NSN 5975-01-622-7534
NSN 5985-01-283-0573
NSN 6145-00-275-4016
NSN 6150-01-170-1109
NSN 4140-01-591-0616