| Term | Definition |
| ocular | a.k.a. eyepiece; magnifies the object you are observing |
| body tube | insures that the distance between the ocular and the objective is correct for proper focus |
| arm | connects the top and bottom parts of the microscope; used to carry microscope |
| stage | location where the slide is placed for viewing |
| coarse adjustment | used to focus the image under low power |
| fine adjustment | used to focus the image under high power |
| lamp | provides light to see the object on slide |
| revolving nosepiece | holds objectives and is used to change from one magnification to another magnification |
| objective | magnifies the object you are observing; magnifies 4, 10, or 40 times |
| diaphragm | regulates the amount of light reaching the slide |
| condenser | concentrates the light from the lamp on the slide |
| base | microscope bottom; used to carry the microscope |
| lens paper | used to clean the microscope lenses |
| dust cover | used to protect the microscope from airborne particles |