Pros: Good (large) clear aperture
Good quality image
Cons: No eyepiece set screw
Telescope end tends to unscrew sometimes (due to .965 adaptation)
I purchased this erect image diagonal for use with a homemade spotting scope and it has not disappointed so far. See comments above. I got over the lack of a set screw by tapping the eyepiece end with a 4/40 tap and inserting a 4/40 thumb screw purchased from Small Parts Inc (also accessible through Amazon).
