Focuses light into the condenser. Controls the amount of light that reaches the specimen. Turret. Body Holding the oculars, rotating nose piece, and objectives. Arm. Connect to the base and supports the head. Used to carry the microscope. Substage Condenser. Focuses light from the light box to the specimen.

Find all of the structures on the microscope (diagrams at end of exercise) being sure that you know their functions. Rotate the condenser so that you see all of the settings (white letters are engraved into the front of the condenser dial). Also, move the iris diaphragm left and right so you can see the effect on the amount of light.