The Optical Microscope or the light microscope uses light and a lens system to magnify the object. The Development & Testing department of Mat-Tech still often uses this microscope to check various metal components and connections and to detect and record errors. The images are digitally recorded and are also immediately visible on a screen.

Brazing and Diffusion Bonding TZM to Graphite Using Cu, Ti, Pd and Cr Filler Metals
Brazing and Diffusion Bonding TZM to Graphite Using Cu, Ti, Pd and Cr Filler Metals  M.H. Biglari, A. Miles, H. Schoonderwaldt and A.A. Kodentsov