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 5910-01-585-7104
NSN 5855-00-145-3307
NSN 6135-01-462-6040
NSN 7035-01-123-8723
NSN 5990-00-434-0620
NSN 6645-00-845-1071
NSN 5990-01-501-5409
NSN 5990-01-281-3120
NSN 6620-00-856-2353
NSN 5990-01-042-7317
NSN 5998-01-600-8022
NSN 6685-00-753-2896