Posted by Les on October 27, 2000 at 20:52:22:
In Reply to: Re: Want to change Ground glass posted by Kaleung Ho on October 26, 2000 at 20:55:18:
I'm not sure what Bert meant by registration, but I would make
sure the new glass was within one or two thousandths of an inch,
and keep the fresnel lens i place so that everything is nice and
tight.