Question - What Are Metallurgical Microscopes?
Answer -
A metallurgical microscope is an inverted scope with light sources designed for magnifying structures of metallographically prepared specimens. The magnification is no different from most normal upright scopes. Companies including Nikon and Olympus produce the scopes and you will be able to find a plethra of information about the scopes on their websites. I would also consider contacting their sales reps to ask specific technical questions about the scopes.