How to Use Compound Light Microscopes

Supports the stage and upper part of the microscope; contains focus adjustment knobs

• Base

• Arm

• Diaphragm

• Nose piece

Supports the microscope

• Arm

• Eyepiece

• Stage

• Base

Raises and lowers the stage or objective lenses

• Coarse Adjustment Knob

• Stage clip

• Arm

• Fine Adjustment Knob

Wheel or lever that adjusts the amount of light that passes through the hole in the stage and into the specimen

• Diaphragm

• Light

• On/off Switch

• Eyepiece

The part of the microscope through which you look; contains usually 10x lens

• Nosepiece

• Eyepiece

• Base

• Stage clip

Raises and lowers the stage or objective lenses a tiny distance for exact focusing

• Fine adjustment knob

• Coarse objective knob

• Base

• Arm

Sends light through the hole in the stage to illuminate the specimen on the side

• Objective lenses

• Eyepiece

• Light

• Diaphragm

Tags

NGSS.MS-PS4-2

Holds objective lenses; rotates to enable changing magnifications

• Nosepiece

• Eyepiece

• Stand

• Base

Used in combination with the eyepiece; provide a range of magnifications, usually from 4x to 40x

• Nosepiece

• Objective lenses

• Arm

• Stage

Turns light sources on and off

• On/off switch

• Light

• Switch

• Arm