Question on No 32 mark II scope

Hello,
First of all many thanks to Peter Laidler for his articles on making up a No 4 Sniper. I was fortunate enought to get the scope a few years ago and have a repro mount. Hopefully in the next week or so I will have a rifle with pads on it.
I have also just got a repro 'Scope adjusting tool' from Numrich, ordered before I saw the home made ones!
As a complete newcomer to this can I ask some very basic questions.

What does the INNER screw on the top of each drum do?
What does the OUTER collar on each drum do?

In Mr Laidelers article he talks about the 'Lead Screw' which is it? Are they the Inner screw or the Outer collar?

Sorry if this sounds very basic but I do not want to muck this up. Any help would be appreciated.
Thanks
Robert

The brass inner 'reverse screwdriver head' is the LEADSCREW. The leadscrew is connected directly to the graticle (or more correctly, the grat block or diaphragm that holds the graticle. It is by turning the leadscrew, via the adjusting tool or the thumbscrew/drum, that moves the graticle.

The outer interrupted slotted 'collar' is the lead screw clamping nut. And it is this nut that clamps the leadscrew to the thumbscrew/drum so that when you turn the drum, it turns the leascrew - by virtue of the fact that the clamping screw has clamped it to the drum.

You do not need the expensive original or repro tool as they are both useless......... That's only my opinion based on nothing more than a bit of experience. The simple hand made tools shown in the little telescope book are far better and easier. You do not need to lock up the lead screw locking nut any more than finger tight. If you are stalking and crawling on the advance into Caen or Antwerp, then lock it up like a juggernaut wheel nut, but otherwise finger tight will do. That way you can always just slip the inner lead screw to make a final adjustment

Robert,

Get one of the little telescope booklets from DS Solutions. It's all there in writing for all marks of No.32 and L1A1 scopes.

Brian

Gentlemen,
Thank you both for your replies. I had noted the point about not over tightening and found DS Solutions a couple of weeks ago so I'll get the book. Hopefully I'll get the rifle when I'm at the Imperial Historic Weekend. If all goes well there will be another No 4 'Sniper' in Scotland by mid July.