The Tesa 05330203 Clinobevel 1 USB Digital Electronic Inclinometer is a great tool for both professionals and DIYers. It helps you measure the slope of an object, making it easy to determine if your roof is leaking or if there are other issues that need fixing. This inclinometer can be used on roofs, stairs, walkways and more. The Tesa Clinobevel will help you keep track of your measurements so you know when something needs repair.