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 5895-00-959-2284
NSN 6105-01-517-5739
NSN 5985-00-252-8443
NSN 6145-01-077-5945
NSN 5975-01-305-1609
NSN 5915-01-340-4592
NSN 6135-00-575-8942
NSN 5925-00-941-4995
NSN 6645-01-250-3787
NSN 5855-01-369-5037
NSN 6150-00-686-8322
NSN 5950-01-070-5084