PERFECT COURSE: Thanks to its patented arm locking system, the compass ensures a constant radius in your journey. This exclusive innovation allows you to easily set down and handle the instrument without double-checking its aperture measurements. Lower the lever and adjust the spacing of the branches, close the lever to lock the branches, and draw a perfect circle! Complete Compass Kit: This stop system compass kit consists of 3 parts: 1 plumb compass, 1 universal ring and 1 plumb box. This simple but effective storage case (with clip clasp, cannot be opened in a bag) allows you to store and consolidate all your equipment and always have it ready to draw a compass with your mechanical pencil or pencil. lead of your choice. Thanks for the universal ring. Safety stitch coverage: The compass is equipped with a protection system that folds over the dry point and the wire. This safety measure avoids any danger and protects your mine in the event of a fall. COMPASS STOP SYSTEM: The Compass demonstrates innovative strength, combining traditional technology with groundbreaking innovation. The compass, iconic object and symbol of the brand for more than 70 years, has been redesigned as one of the innovative products of the year.