| A | B |
| Eyepiece | contains the ocular lens |
| Body tube | holds the system of lenses |
| Nose piece | Contains the objective lens and can be rotated |
| High-power objective lens | objective lens |
| Low-power objective lens | objective lens |
| Stage | platform that holds the slides |
| Stage clips | Holds the microscope slides in place |
| Diaphragm | Controls the amount of light up through the stage and through the object being viewed |
| Mirror/Light source | Collects and directs light through the stage and through the object being viewed |
| Base | Supports the microscope |
| Coarse adjustment knob | Controls movement of body tube and used to bring the image into view |
| Fine adjustment knob | Controls movement of body tube, used to sharply focus the image |
| Arm | Suppports the body tube |