British Model 18/ Ozzie Pattern 18 sniper Scope Rubber eyepiece

[Son]

Valley, that pic is one that I had come across too. I can't remember if it was me who posted it here or I got it from here when you did. I don't have any details on it but I do have a better pic of one and the forum name of the owner, I will track him down if I can. In the meantime, here's the better pic, I will leave it as big as the upload will take in case you need to use proportions to come up with measurements.

I would think your mate making them would have an idea about how much undersize to make the bit that goes on the scope. It may be a percentage, like 5% smaller than the scope OD. From there, dimensioning might not be too hard. One thing I do recall, the original is tapered in the wall thickness, to near nothing at the back making it very plyable on the eye socket

Attachment 37850

edit to add; I have just sent a PM to the owner of this one over at gunboards, and checked to find he is a member here also. He was in the discussion a while back on the topic here, link to thread

Lithgow Sniper eyepiece cover

Hopefully he'll be along shortly.... the owner of the other pic started that thread. He is still about too... maybe he'll say g'day as well....