Sir,
There's a booklet called "Telescope Sighting No.32, Mk.1,2,3 Including the No.42,53 & L1A1, An inside view of the Snipers rifle telescope" by Peter Laidler.
This booklet is the bible for anyone interested in the history, use, function and maintenance of the No.32 scope and it's accessories. I have them in stock at BDL LTD Rifles and Accessories along with Peter's book on the sniper rifles which you might also want to add to your library. Contact me directly if interested. ATB.
Brian