| A | B |
|---|
| eyepiece | Contains the ocular lens, or the lens that is closest to the eye. |
| nosepiece | Holds the 3 objective lenses. It can be rotated, or turned, to change the magnification. |
| objective lenses | 3 lenses with different powers of magnification that range from 4X to 40X. |
| arm | Used to support the microscope when it is moved or carried. |
| coarse objective knob | The BIG knob that moves the stage up and down for focusing on a specimen. |
| stage | Flat surface where a slide is placed for viewing. |
| stage clips | Hold a slide in place to make viewing a specimen easier. |
| fine adjustment knob | The SMALL knob that moves the stage slightly to sharpen an image's focus. |
| diaphragm | Hole under stage that allows light to pass through a slide. It can be rotated or moved to change the amount of light that comes through. |
| light source | Allows light to shine up through the diaphragm and onto a specimen. |
| base | Supports the microscope, and should be held when moving or carrying the microscope. |
