Just position the touch plate on top of your material at the corner, connect the clip to your cutting tool, and use the Auto Z Touch Plate function in Centroid or Mach4. The Z axis will slowly lower until the tool makes contact with the touch plate and then independently contacts the two edges adjacent to the corner. The system will automatically set the Z height and location to that of your work piece, making tool changes and stock changes faster and more reliable. Our touch-plate is reversible for Z height-only applications! Simply flip it over to use the side without the corner-finding features. The brass spring-loaded contact pad on both sides provides a unique safety feature that helps prevent tool or machine damage in the event of an error during tool setting.