Tools No. 32 Sighting Telescope No.1 Mk.1 & No.2 Mk. 1

[Warren]

Once you learn how to set the the proper tension jam collar, you can skid the adjustment lead screw and it is a no brainer to set the scope up.
Then, just snug up the jam nut and hope the lead screw does not move.
It may take a time or two to get it down pat.
Works on all the model scopes and you can also get the Mk.III closer to the centre of the scales ....