LOCKABLE ADJUSTABLE: Contour gauge to adjust the tightness according to your needs. It is particularly useful for drawing the outlines of irregular and complex objects. It can be locked and fixed after each adjustment and is precise. AVAILABLE IN BOTH ENDS: Designed with a pulley end and a pointer end, both ends can be used. Smoother drawing with the pulley end, while drawing precise and easy with the pointer end. HIGH QUALITY AND DURABLE: Made of high quality metal, it is strong and durable. Easy to carry and store, just put it in your toolbox and take it with you anywhere. EASY TO USE: Simple operation, namely pushing, knowing pulling, one-handed adjustment. Fixing the pencil in the middle, press while drawing to easily draw the lines without errors. ACCURATE SHAPE DUPLICATION: Easier way to duplicate different shapes, ideal for laying tiles, cutting laminate and carpet molds, ceramic and tool molds, etc. Contour gauges can be used to outline irregular and complex objects like wood, tiled floors, etc. and are an essential tool for your carpentry work.