Across
- 3. This moves the stage up or down to focus on the specimen. This is the first knob you use to focus on a specimen.
- 6. This has different-sized holes that let different amounts of light pass through the specimen on the stage.
- 8. This is where you place a slide for observation. Always keep this dry.
- 9. This supplies the light that passes through the specimen on the stage. Microscopes that do not have this may have a mirror to collect and direct light.
- 10. There are three lenses that magnify the specimen: low-power (4x), medium- power (10x) and high-power (40x). Keep the lenses free of dirt and fingerprints.
- 12. This separates the ocular lens from the objective lenses at a distance calculated for proper magnification.
- 13. This provides a stable platform for the microscope. Always set it on a flat, dry, uncluttered surface.
Down
- 1. Use this to sharpen an image under low and medium power. It is the only adjustment knob needed with the high-power lens.
- 2. This is where the objective lenses are mounted. Rotate the lens to select low-, medium-, or high-power lenses.
- 4. This holds the tube in place and is used to carry the microscope.
- 5. These are used to hold a slide in position on the stage.
- 7. This magnifies the specimen, usually by 10 times (10x). This is the lens you look into.
- 11. This is under the stage. It helps focus light onto the specimen on top of the stage.