An item designed to be mounted around and secured to the main tube and extension tube(s) of a borescope to center and balance it in a cannon bore.
NSN 6220-01-250-4149
NSN 4140-00-528-2921
NSN 5920-00-673-7648
NSN 5905-01-320-9164
NSN 5999-00-146-5581
NSN 5998-01-434-0036
NSN 5999-01-660-8923
NSN 5910-00-304-7862
NSN 5915-01-340-2392
NSN 6650-01-186-2426
NSN 5985-01-306-9644
NSN 6130-01-026-2001