|Dave, in Winston-Salem, North Carolina sent along his 10" Royce Conical.|
Here you see it mounted on the mirror board and mirror cell.
Note the mirror cell is NOT larger than the mirror!! Just an optical illusion..
|The conical mirror mount with a single 1/2" nylon bolt, spring and nut.|
For the 10" size, and smaller, the bolt does not protrude through the mirror surface.