I doubt Ballard will start production, of quite some difficulty is finding a 4" billet of steel to start with and then as this is mostly turned away to form the large, flanged spigot; it falls to the Sigs Clerk to attend the lathe for hours making and clearing pre-tempered clock springs as the majority of the lump is reduced to some 22mm diameter from the original 101.6mm.

There was a rudimentary drawing, however; I wonder if we still have it.

R.