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 5998-01-079-3583
NSN 6610-00-597-3095
NSN 5998-00-949-0275
NSN 6110-01-447-2770
NSN 5905-01-097-3559
NSN 5935-00-989-2606
NSN 5835-01-163-4215
NSN 5990-00-554-0366
NSN 5895-01-472-2684
NSN 6150-01-586-3490
NSN 6610-01-611-8787
NSN 5998-01-386-3859