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 6645-01-611-9391
NSN 5930-00-463-2780
NSN 6645-01-237-7876
NSN 5920-01-514-7007
NSN 6685-00-399-3250
NSN 5999-01-646-0792
NSN 5965-00-948-2809
NSN 5895-01-465-7639
NSN 4140-01-127-0032
NSN 5945-00-003-8776
NSN 6610-01-033-1748
NSN 4140-00-311-6329