1. A focus knob that allows the stage to move up and down to get the specimen into view.


Sagot :

Answer:

Coarse Adjustment Knob- The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus. The gearing mechanism of the adjustment produces a large vertical movement of the stage with only a partial revolution of the knob.

Step-by-step explanation:

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