Features 1、The spring compass can be used to draw arcs and circles, bisector angles, bisector segments, and measure dimensions in the work of the fitter. 2、It is the basic tool used to determine the center position of the hole and the axle and to draw parallel lines. 3、The spring compass is made of 45# steel material, and the two feet are quenched. 4、With spring locking device, it is more accurate than ordinary marking, easy to use and easy to operate. 5、Professional and practical design with beautiful appearance, easy to carry and use. Specification Features: The spring compass can be used to draw arcs and circles, bisector angles, bisector segments, and measure dimensions in the work of the fitter. It is the basic tool used to determine the center position of the hole and the axle and to draw parallel lines. The spring compass is made of 45# steel material, and the two feet are quenched. With spring locking device, it is more accurate than ordinary marking, easy to use and easy to operate. Professional and practical design with beautiful appearance, easy to carry and use. Specification: Size: 75mm/100mm/125mm/150mm (Optional) Material:45# Steel Package List: 1*Leather Craft Compass Package List