How about a reflective ND filter?
Edmond Scientific has them. I think I might have some laying around.
Send me an email at t miller @ u maryland . edu. (remove the spaces)

Tom


"Christopher Tidy" wrote in message
...
Hi folks,

I just bought a metallurgical microscope. Unfortunately it has a
problem: the semi-silvered mirror is missing. From the mirror's frame
it looks to have been made from an oval piece of semi-silvered glass
about 1/32" thick. I'm thinking I'm probably going to send the
microscope back, but I just thought I'd ask here in case anyone can
think of a source for a small piece of semi-silvered glass or plastic.
Do I stand any chance of finding some?

Best wishes,

Chris