Can you specify the lens? Is it correct that this does not need to be an achromat, since you will test a a single color? Steve Beccue steve@beccue.com On Mon, 1 Mar 2004, Robert Turner wrote: > Hi, > > Is there anyone that is able to make a lens for a null test? > > > Robert > _______________________________________________ > ATM mailing list http://www.atmlist.net/ >