What are levels?Square level & levels are used to check whether or not something is level. They are ideal for hanging pictures in frames, shelves, or checking if the floor is level. The right measuring tools can help gauge dimensions of materials accurately like covering a window or as simple as fixing a hole. Accurately measure the length, height, and with of objects with a HomElectrical square level & levels. HomElectrical has all the right equipment to help you make accurate measurements correctly and affordably.