Helical gear drive
A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.
Classification: Military equipments not identified by kind
NSN 2925-01-026-1000
NSN 6240-01-289-4536
NSN 5998-00-316-3393
NSN 6135-00-062-5080
NSN 6105-01-594-2251
NSN 5915-01-552-1004
NSN 6150-01-071-6210
NSN 5975-01-401-5355
NSN 5996-01-653-2865
NSN 6620-01-631-0700
NSN 5915-00-518-1644
NSN 6150-00-558-5508