[Portable Rotape Tape Measure Compass]: The design is compact and easy to carry and store; Whether are an architect, artist, or woodworker, can carry this drafting compass around with for convenience [Material and Auto Retract Button]: this circle drawing tool is made of plastic, the finish is smooth, and it is more comfortable to use; Not easy to break or rust, ; 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 operation is convenient, is a good helper on the job [Beam Compass with 10 Pencil Leads]: this is a retractable round drawing tool with a tape measure beam and comes with 10 spare refills; Can secure the included pencil lead in place for a stable and consistent drawing experience; Have enough refills for to have a spare [Easy to Use]: this tape measure is easy to use, all need to do is to secure the pencil lead to the head with the included metal parts and insert the central needle into the small hole in the center of the tape measure to secure the tape measure and finish using it easily [Versatile Double Scale Drawing Measure]: this compass geometry tool has metric and imperial dual scale up to 6.56 feet long, easy to read and measure; It can draw not only arcs, circles but also straight lines, suitable for woodworking, decorative design, Industrial drawing and etc., quite flexible and convenient to use, Weight: 0.18298367746 pounds, Manufacturer: Kueohse