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 5965-01-406-0766
NSN 6645-00-780-5260
NSN 5935-01-122-9169
NSN 5920-00-736-7882
NSN 6220-01-411-6542
NSN 6150-00-620-0484
NSN 6685-00-223-9042
NSN 6145-01-261-1940
NSN 7035-01-486-4118
NSN 6135-00-062-5080
NSN 5835-00-247-0161
NSN 5930-01-111-4886