It help to draw things near and also see things very well.
It is the smallest knob on the microscope.
fine adjustment knob
On a light microscope there is the coarse adjustment knob and the fine adjustment knob
in a microscope their is a knob referred to as "fine focus knob" it is meant to change the distance between the lens and the platform.
After you adjust the coarse adjustment knob, the fine adjustment knob makes it sharper or clearer.
The fine-adjustment knob moves the body tube slightly to bring the image into sharper focus.
This is the coarse adjustment knob. This should be used before the fine adjustment knob (the smaller knob) - which is for fine focusing.
The course adjustment knob raises and lowers the stage of the microscope. This knob is mainly used on the scanning and low power knob to simply find the specimen. When trying to focus directly, use the fine adjustment knob.
You use the Fine Adjustment Knob to give a very clear image on the microscope, mostly used on high power magnification.
Fine Adjustment Knob
After you adjust the coarse adjustment knob, the fine adjustment knob makes it sharper or clearer.
The adjustment knob is a component of a microscope that focuses the image of the object being studied. It is used in conjunction with the coarse adjustment knob.