Hi folks - as a training and intellectual exercise this sounds like a good one to try; plus if Greyrider wants a field reticle and if I can make one (that's a big 'if') I'll be happy to make him one.
I chuckled when I read Capt.Bones's post, it was informative and excellent; he is describing exactly what is happening here: an Army guy trying to build a pair of field glasses
I'll give it a shot; for learning and for fun but no promises at all until I understand the file structure a little bit more.
Cheers!