arm - this attaches the eyepiece and body tube to the base.
base - this supports the microscope.
body tube - the tube that supports the eyepiece.
coarse focus adjustment - a knob that makes large adjustments to the focus.
diaphragm - an adjustable opening under the stage, allowing different amounts of light onto the stage.
eyepiece - where you place your eye.
fine focus adjustment - a knob that makes small adjustments to the focus (it is often smaller than the coarse focus knob).

high-power objective - a large lens with high magnifying power.
inclination joint - an adjustable joint that lets the arm tilt at various angles.
low-power objective - a small lens with low magnifying power.
mirror (or light source) - this directs light upwards onto the slide.
revolving nosepiece - the rotating device that holds the objectives (lenses).
stage - the platform on which a slide is placed.
stage clips - metal clips that hold a slide securely onto the stage.