As a circle layout tool with sliding soapstone holder and 360 degree scale on the magnetic base. Will cut circles up to 30" in diameter. Bolt circles, hole locations, baffle plate placement, & circle sectioning for any number of reasons is a snap with this tool. Also as a circle burning guide use this same tool to cut a round plate, simply place the sharpened pin of the layout tool into your center punch mark and let the magnet slide down to sit firmly on the work surface. The magnet is strong enough to support the weight of your torch, which frees your hands for more cutting control. Made in USA.