It is constructed of The rotating wheel is used to adjust the position of bubble in the pipe It is suitable for craftsmen, general contractors, homeowners, plumbers, electricians This multifunctional engineering angles meter can be used for both measurement and setting The measuring instrument can be widely used for civil engineering, constructional engineering, interior decoration and other engineers involving and inclination angles Designed with large number and clear scale, the angles meter is easy to read. And the ergonomic handle makes it comfortable to grips, Manufacturer: BOYANDM