2.1: Parts of the Microscope

Become familiar with the location and function of the following parts.

1. Arm and Base
2. Ocular lens – magnifies by 10X
3. Revolving nosepiece – contains 3 objective lenses
   1. scanning objective lens magnifies by 4X   
   2. low power objective lens magnifies by 10X
   3. high power objective lens magnifies by 40X
4. Stage and stage clips – hold the slide for viewing
5. Stage adjustment knobs – located below the stage to control forward/reverse and side to side movement of the stage
6. Coarse adjustment knob – for focusing ONLY when using scanning objective lens
7. Fine adjustment knob –brings object into clearest focus
8. Iris diaphragm – controls the amount of illumination to improve contrast and resolution