Given that the microscope seems set up to allow for bottom lighting I would not describe it as a metallurgical scope (though it can certainly be used for that) but more generally as a trinocular ...

Metallurgical microscopes are specially-designed microscopes that are used for metallurgical evaluation, including the assessment of metals, ceramics and other materials. Specialty uses of these ...

Inverted Metallurgical Microscopes observe samples from underneath, enabling the user to inspect thick or heavy samples without adjusting the orientation of the sample surface. Marc Silverstein ...

THE Institute of Metals is organising an all-day Symposium on “Metallurgical Applications of the Electron Microscope", which will be held at the Royal Institution, London S.W.I, on November 16 ...