Hey Elcid thank so much!
I ran your the Arctan, and Magnification x 6 methods and recorded the results in the link below.
I found your first Arctan ranging method did not work for me and your Mag x 6 fell just short so I changed it to x7 instead and that worked great out to ranges up to 3,000m after that there is a degree of error that gets larger, the further away but that is not important anyhow as you would not be firing torpedoes at that range!
((Mast Height (m) / mils observed) x 7 (Mag) * 1,000) = Range (m) approximate)
See here for the video:
the reticle and RAOBF calculation don't match, as well as the zoomfactor. I 've done a personal interface in Dark Waters, I'd do another mod for KSDII later if anyone need. Actually the Peri sight can also cal AOB directly
see my other post.https://www.subsim.com/radioroom/sho...42#post2877942