[ACCURATE]: Scribe Tool makes circles between 1-1/2" and 21" diameter for measuring diameters, angles, and draw circles/arcs without repeat use of a ruler. [QUICK & STRONG]: The Woodworking Compass locking knurled knob enables quick, smooth adjustments until contact with the center collar. The needle point metal tip makes strong engravings and will not slip. [2 IN 1 COMBO]: This compass divider works both as a scribe and compass for all your marking needs. It is the ideal compass for woodworking. [VERSATILE]: This scribe tool is perfect for doing large carpentry work, drafting, geometry, woodworking, metalworking, and leather working. [BUNDLE]: Carpenters Scribe Tool includes Two Pencils with Eraser Tops and One Metal Pencil Sharpener.