The mount is locked into place using a friction locking ring which, in conjunction with the four prongs of the flange, creates a very strong lens seating.
32.
The Carousel tray held slides in place with a locking ring on its hub, preventing slides from accidentally spilling out of the tray if it was dropped.
33.
These guns were built with a new simplified design, no liner, five hoops, a locking ring, along with a screw-box liner and a different gas check seat.
34.
Mod 0, Nos . 323 356, had a single jacket constructed of nickel-steel, that replaced the jacket, chase hoop and locking ring of the Mark 5.
35.
Mod 2, gun Nos . 183 185, was a Mod 0 gun relined with a conical liner, a new chase locking hoop, and with a locking ring added.
36.
This is effected by a thick wheel on a central grooved pillar for adjusting the length and a thin locking ring behind it locks the thick wheel in place.
37.
The Mark 3 was the last 10-inch gun built for the U . S . Navy, with a tube, jacket, locking ring and screw box liner manufactured from nickel steel.
38.
The Mark 5's have a larger chamber to permit larger charges and a new liner with a heavier taper carbon steel along with a liner locking ring and locking collar.
39.
The method of attachment to the wafer varies between manufactures and includes permanent ( one-piece ), press-on / click ( " Tupperware " type ), turning locking rings and " sticky " adhesive mounts.
40.
The 10-inch Mark 3 Mod 0 was built in a length of 40 calibers, had a hoops with a locking ring, and a screw box liner, all of which were manufactured out of nickel-steel.
