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 5935-01-258-0127
NSN 5950-00-547-8250
NSN 5975-01-190-0175
NSN 6145-01-465-3415
NSN 5998-01-447-3256
NSN 6650-00-403-5251
NSN 6620-00-621-2904
NSN 5835-01-362-1946
NSN 6135-00-812-9039
NSN 6135-01-314-8416
NSN 6110-01-623-3330
NSN 5925-00-004-4068