This XSP-L101 is a monocular biological microscope specially designed for school students to easily perform various lab tests. The optical microscope includes an eyepiece, objective lens, coarse collimation screw, fine collimation screw, film clamp, light hole, shutter, converter, mirror, mirror arm, lens tube, lens holder, condenser, and diaphragm composition. This microscope will magnify tiny particles that cannot be seen with the naked eye.