A complete set for making sound level measurements by deriving a visual indication relative to the intensity of the sound being measured.
Classification: Ship' logs and depth-sounding apparatus for navigation
NSN 5965-01-379-7706
NSN 5960-01-413-3877
NSN 5999-01-239-4620
NSN 5835-01-423-9203
NSN 5998-01-160-8574
NSN 6650-01-265-0650
NSN 4140-00-174-6287
NSN 5975-00-111-1226
NSN 6320-01-607-1491
NSN 5925-01-629-1410
NSN 5965-00-035-4556
NSN 5996-00-917-0626