Hi ATMers, Surplus Shed have 4-1/4" (108mm) Pyrex blanks for $5-00 http://www.surplusshed.com/pages/item/l3357.html I just treated myself to one of their 1/20th wave zerodur flats :) http://www.surplusshed.com/pages/item/l3167.html -- Best regards, Richard in the UK _______________________________________________ ATM mailing list http://www.atmlist.net/