Why is the coarse adjustment knob hard to turn on my Olympus BX43 Microscope?
- RrobinsonhenrySep 13, 2025
If the coarse adjustment knob on your Olympus Microscope is hard to turn, the tension adjustment ring may be tightened excessively; loosen it. Also, ensure the pre-focusing lever is unlocked if you are trying to raise the stage.













