Fig. 3: Olympus CX31 Microscope

Photograph showing the right-hand side of an Olympus CX31 microscope with the parts labelled.

iris diaphragm lever: moving the lever to the left increases the light; moving the lever to the right decreases the light.
forward/backward stage control: moves the mechanical stage holding the slide forward and backward.
left/right stage control: moves the mechanical stage holding the slide left and right.
coarse focus: turning the knob away from you raises the stage; turning the knob towards you lowers the stage.
fine focus: turning the knob away from you raises the stage; turning the knob towards you lowers the stage. 

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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: Nov., 2022