Abstract: An automated microscope slide marking device 10 for making reference marks on the surface of microscope slides 90. The slides 90 are marked by placing a remote push-button 14 or foot-switch 32 at an ergonomically desirable position for a microscope user. When either the push-button 14, or the foot-switch 32, is engaged by the user, a solenoid coil in an electrical actuator 26 is energized. This actuator 26 controls the movement of a plastic fiber 62 through an ink well 56 and through a thin needle-like tube 58, which is directed toward the surface of the slide 90. Thus, when the actuator 26 is energized, the plastic fiber 62 protrudes from the end of the tube 58 so as to come into contact with the surface of the slide 90 and make a reference mark thereon.