| A | B |
| Ocular Lens - Eyepiece | Part you look through. Magnifies object by 10X |
| Stage | Supports the slide. |
| Clips | Holds the slide in place. |
| Diaphragm | Regulates the amount of light reaching the slide. |
| Objectives (lenses) | Magnifies the object (by 4X, 10X and 40X) |
| Revolving nosepiece | Rotates and allows for the use of different objectives. |
| Body tube | Contains the ocular lens, supports the revolving nosepiece |
| Coarse adjustment knob | Moves body tube up and down. To be used at low magnification only. |
| Fine adjustment knob | Moves body tube slightly to focus on specimen. To be used at high magnification. |
| Condenser lens | Directs the light to the specimen |
| Arm | Joins the base to the body tube |
| Base | Is the bottom of the microscope that rests on the table. |