It keeps me out of mischief..........

[Warren]

Some erector plate covers do have teeth or checkering on the inside of them.
I have only run into two or three in the several hundred scopes I have worked on but they do exist.
I think I might have kept photo of one.
One thing you learn real fast on the No.32 scope.....any Mk., is the only thing that is consistent is inconsistency.
cheers,
Warren

If you do get an erector cell that does move on you, you can make a short BA 8 grub screw and put it under the screw holding the erector plate to the tube.
It is something I have had to do with a number of the repro scopes as the early ones, the erector cell was just glued in with RTV.