An item usually in the form of a ring, designed to fit on the front of an instrument to secure the window material of the instrument. See also bezel,instrument mounting.
NSN 6145-00-027-4824
NSN 2925-00-833-9466
NSN 5920-00-829-3634
NSN 5960-01-275-7552
NSN 6130-01-605-0942
NSN 5915-00-965-9842
NSN 6320-00-646-3311
NSN 6135-00-491-9864
NSN 5920-00-594-3124
NSN 5960-01-243-0007
NSN 6135-00-248-4102
NSN 5910-01-429-1059