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 5920-01-109-8932
NSN 5905-01-315-5897
NSN 5990-01-304-7597
NSN 5945-00-097-1046
NSN 5895-01-353-0188
NSN 5999-01-564-5032
NSN 4140-01-442-7799
NSN 5910-01-515-8469
NSN 5998-01-323-7112
NSN 5895-01-416-8281
NSN 6650-01-202-0596
NSN 5960-01-146-0289