Dr. Brasington

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Base: The supportive bottom piece of the microscope.

Sub stage light: It’s a light, it removes the dark. It is operated by a switch.

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Head: AKA body tube Supports the ocular lens and objective lens system.

Ocular lenses: Eyepieces. Usually has a magnification of 10X, increases the magnification by a power of 10.

Nosepiece: Attaches the objective lenses. Objective lenses: 3 or 4 objective lenses. 4X (scanning), 10X (low), 40X (High), if present 100X(oil immersion).

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Arm: Narrow, vertical part connecting the head and base.• Stage: The flat platform upon which the

microscope slide is placed. The mechanical stage or stage clips keep the slide stationary.

• Coarse adjustment knobs: Usually the largest knobs on the arm. Turning them raises and lowers the stage. Control the focus. **should only be used at 4X or 10X to avoid contacting the lens.**

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Arm ContinuedFine Adjustment knobs: usually located at the center of the coarse adjustment knobs.

Condenser: A lens located just below the stage. Concentrates light on the specimen.

Iris Diaphragm Lever: Opens and closes to regulate light passing through the condenser. 6

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Cleaning: Only use Lens paper and optical lens cleaner (provided at your lab stations) for objective lenses!

When storing, put on lowest objective, lower stage, wind the cord, and use microscope cover.

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