The 0.5THDN drift nest provides a temporary, magnetic laser tracker target adapter in almost any location and on almost any surface. Use any general adhesive (we often use a hot glue gun) to attach these adapters temporarily to machine tools, concrete floors and pillars, posts, stands, or just about anything else that is available. Note that the magnet is meant to secure the laser tracker target to the adapter, but is not meant to hold the adapter to the surface on which it sits. When you're finished, remove the adapter and you're on your way to your next assignment. Works with a 0.5" diameter laser tracker target.