You are reading a single comment by @Ste_S and its replies.
Click here to read the full conversation.
-
Yeah @TooTallTim It should be recoverable.
I think you can also focus to infinity outside in daylight with a bit of tape or donor film in the gate, although the methods that @danb have linked to look far more accurate
You can recablibrate it if you do get it wrong - http://elekm.net/zeiss-ikon/repair/collimate/
http://members.tripod.com/rick_oleson/index-123.html