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 5998-01-157-2900
NSN 5960-01-495-0859
NSN 5950-00-447-0579
NSN 5925-01-543-9641
NSN 5996-00-400-8032
NSN 6685-01-306-4747
NSN 6240-00-729-9696
NSN 6130-01-345-3655
NSN 5975-00-288-5877
NSN 5945-01-445-9498
NSN 5895-01-649-4666
NSN 5855-00-483-0020