The Vision Engineering MTB220 Pilot Stage is an accessory for use with the Mantis Stereo Microscope Systems. The Pilot Stage features auto-lock to prevent unwanted movement. Install the stage on the Stabila Base (sold separately) with the included stage pillars, fitting screws, and tool. Press in the handles on either side of the Pilot Stage to release the brake mechanism. Move the stage to the desired position and release the handle to apply the brake. The handles can be used individually for one handed operation or together for greater precision. NOTE: The brake mechanism is to provide a way of holding the stage in position. It does not lock the stage completely.