These contour gauges work great in cropping to mark around pipes of heaters, radiators, boilers, toilets and much more. You can hold it against your flooring or wall and draw around the contour you have copied. It is easy to use and a great tool for any handyman. Get one today for only $34.95 at:
https://mytoolcenter.shop/products/3pc-contour-gauge-w-metal-lock-multi-angle-tool