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 6620-01-210-4401
NSN 2925-01-430-4206
NSN 5950-01-449-3502
NSN 5985-01-037-4602
NSN 6220-01-564-6203
NSN 5999-01-489-6139
NSN 6135-00-505-0679
NSN 6620-01-327-3011
NSN 5930-01-479-4016
NSN 6685-01-106-3210
NSN 5915-00-359-7776
NSN 6240-00-433-1070