Frank Thanks again, I just ordered two! Regards Ralph W. Lambrecht http://www.darkroomagic.com On 2005-11-24 19:02, "Frank Filippone" <red735i@xxxxxxxxxxxxx> wrote: > Ralph.. I bought a mask made for semiconductor manufacturing. It is an old > item, so of no commercial importance. The lines are etched on with accuracy > to 5 microns. It is a B+W Mask only of a geometric pattern. It works quite > well if you are only interested in alignment. The mask is so accurate, that > any error is in your setup. You can examine the projected image on the > baseboard or make prints and check them out. > > It is thin glass, about 6 inches square... > > I got it from > > http://www.goldmine-elec.com > > The item I have is about 10 years old, but they still have them in stock...... > > http://www.goldmine-elec-products.com/prodinfo.asp?number=G14259&variation=&ai > tem=2&mitem=2 > <http://www.goldmine-elec-products.com/prodinfo.asp?number=G14259&variatio > n=&aitem=2&mitem=2> > > BTW, they claimn the masks are .5 inches thick.. no way.... they should be > around 0.100 inches thick or thinner..... > > It may or may not do what yo want, but it is only $12.......! > Frank Filippone > red735i@xxxxxxxxxxxxx >