|
Dominic,
Not true darkfield on one of my stereo microscopes.
Set up with high intensity oblique light. Mirror is examinrd against a black
background. Quite satisfactory for classes in mirror making I teach. I take the
scope and light source with me to class.
The other set up I use at home is true darkfield.
It is a B&L Gemolite 10-30-60 power scope with a substage illuminator that
provides true darkfield, or may be switched to brightfield. Invented for the
Gemological Institute of America by a very bright guy named Lester Bensen. (
Yes, I am a gemologist. Fellow of the Gemmological Association of Great
Britain.)
Bill Kelley
|