STP Viewer is a professional software that offers different functions to work with STP/STEP and other 3D files such as IGS/IGES, SAT, BREP. In addition to viewing, converting and printing 3D files users also can measure the required object of the drawing. It is possible to get its overall dimensions, volume, area, height between two parallel surfaces, distance between two points, length of an edge and radius of a circle or a circular arc.