LIMIT SWITCH NOT TO SCALE 1 of the 2 limit switch mount. On either side (mirrored) the limit switch mount is required to have a angle so it can mount on. Used to detect walls (or big objects) as well as physically stop the robot. It has a slots for an adjustable side to side and a big screw so it can move up and down. Built to be thicker so it can absorb the trauma when moving into a wall. Uses PLA plastic with a 15% infill (not solid).