1、WITH PENCIL REFILLS: This is a retractable round drawing tool with a tape measure beam and come with 50 spare refills; Can secure the included pencil refill in place for a stable and consistent drawing experience; Provide enough refills for to have a spare 2、RELIABLE MATERIAL: This circle drawing tool is made of plastic, the finish is smooth, and is more comfortable to use; Not easy to break or rust, erosion resistant 3、AUTO RETRACT: This rotape tape measure compass also has an auto retract button, when the button is pressed the tape measure automatically retract, lift up the button to fix the tape measure, the operating is convenient, is a good helper on the job 4、EASY TO OPERATE: This tape measure is easy to use, all need to do is to secure the pencil refill to the head with the included metal parts and insert the central axes needle into the small hole in the center of the tape measure to secure the tape measure and finish using easily 5、VERSATILE DOUBLE SCALE DRAWING MEASURE: This compass geometry tool has metric and imperial dual scale up to 6 feet long, easy to read and measure, can draw not only arcs, circles but also straight lines, suitable for woodworking, decorative design, industrial drawing and etc., flexible and convenient to use