Fleib, Thank you very much for your informative review. I also found that 2MP USB scopes really can´t see micrometers, and it´s even almost impossible to see a sharp pic of a stylus at 200X because the pixels themselves become visible. Depth of field is problematic with high magnification anyway.
So a real stereo microscope, e.g. an Atala BYO-500T with 400X and 1000X is the solution for me to study Micro-Ridge´s and Shibata´s wear.
So a real stereo microscope, e.g. an Atala BYO-500T with 400X and 1000X is the solution for me to study Micro-Ridge´s and Shibata´s wear.