To adjust the focus of the microscope to make the image clearer, To direct light into the viewer’s eye, To hold a slide in place, To magnify the image of a specimen, usually 10x, Eyepiece lens, Objective lens, Stage and stage clips (clips not shown), Mirror (your microscope might have a light instead), To magnify the image of a specimen, usually 3 different options, 4x, 10x and 40x, Focus control knob (usually there are two, coarse and fine)

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