WW1 'Periscope Prism company' sniper scope???

[Surpmil]

I find I could hit the thanks icon for every post here chaps, best thread in ages. Thanks to all the contributors, fascinating stuff.

Very kind of you; good to know we're not suffering alone here!

Img15, great photos there. That erector cell adjustment slot on the underside may be a sign of some post-war fiddling. I once had an Aldis No4 with post-war H&H marks where a second slot had been cut, presumably some mixing and matching of optical components made that necessary. Worthy of a refurb that one.

To anyone reading this who has an Aldis scope or serial numbered parts of one, we've got somewhere around 125 logged so far and would welcome more details or photos. Post here or PM Roger, Img15 or myself. TIA.