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 5915-01-441-0388
NSN 6645-01-431-4545
NSN 6685-00-737-0022
NSN 5990-00-869-2122
NSN 4140-01-454-9239
NSN 7035-01-181-2705
NSN 5950-00-735-4978
NSN 6620-01-406-3584
NSN 5960-01-314-7757
NSN 6685-00-401-5594
NSN 6135-00-231-7257
NSN 5960-01-658-9538