Microscope Focus Tip
Where Is the Coarse Knob on a Microscope and How Do You Use It?

Learn where the coarse knob is located on a microscope and how to use it for initial focusing before fine adjustment.

Microscope Coarse Knob
What Are the Two Functions of the Coarse Knob on a Microscope?

Learn the two main functions of the coarse knob on a microscope for focusing and locating specimens quickly.