Cheaper screens than Beattie or Maxwell, I've used them for my Yashicamat and Minolta Autocord and they're a vast improvement on the originals.
22nd May 2009
Screwsline can sell small screws in small quantities. This is the only source I've found for #2, 1/4" csk brass screws.
12th November 2008
There may be cheaper sources, but these guys have a variety of shapes and sizes which might not be available elsewhere.
12th November 2008
Broke the GG on my Wista - Fortunately, it has a plastic fresnel screen under the glass.. Chance Glass were able to supply a piece of 1.2mm thick float glass for peanuts.
21st November 2012
Suppliers of dichroic filters and heat proof filters for repairing enlargers.