Memory Game Microscope: Parts & FunctionsOnline version Parts & Functions by Mr. Connolly Diaphragm Eyepiece lens Fine focus wheel Stage & Stage clips Brings the image into rough focus Light Source Controls the amount of light passing through the specimen Base Magnifies the specimen by different factors (x4, x10, x40) Objective lens Magnifies the specimen, usually by a factor of 10 (x 10) A built in light bulb or mirror that lights up the specimen Brings the image into sharp focus Holds the slide in place Coarse focus wheel Keeps the microscope stable