IN Re. #1 :
I photographed parts of a green bound Navy Bu. Ord publication titled "Collimators for Optical Instruments", or something like that, ( I do not want to dig into my files here, nor those in storage, today).
I posted them in this forum , probably 10 years ago. But the moderators removed them. ( " 60 plus years or not, public domain or not, it violates our policies, if you are not the original writer or source"), or words to that effect.
Later, I bought , and yet have, from now vanished LEGITIMATE (not cumshaw) Navy surplus auction, a set, still in its crate, of about 8 Mk. 8 collimators and their supports on a large aluminum frame. This was for adjusting shipboard sights in a workshop situation.
The collimators are about 50mm aperture. They have separate eyepieces and target-illuminator paired sets for each of the reversed telescope collimators. That is: artificial targets at simulated infinity distance.
Those, and the MK. 3, 4, 5 and 13 (maybe more) binocular collimators, are described in the above cited publication.
Are you aware of Hanna in ATM 2 or 3 , from Willmann-Bell in Richmond , Virginia. Those books are the true "Bible" , to use your terminology.
Be sure to get a JTII "hand collimator" rhomboidal comparator, or equivalent. What was the little one which Hans Seeger was using? RSVP if anybody knows.
Edited by Gordon Rayner, 26 October 2020 - 06:17 PM.