Needs to be callibrated.

I can't find a perfect model match to this microscope. It's closest to their RM model minus that little prismatic adjusting knob

The last picture in the listing images would be an exact match if it were not for that black knob prismatic adjuster. that has a red arrow pointed at it.

Trinocular Microscope 40X-5000X Magnification Laboratory Grade with Dual Mechanical Stage and HD USB Camera Microscopes for