1、Wide Application: This spring caliper has a very wide range of applications for woodworking, carpentry, metalwork, leatherwork, math and more. 2、Multifunctional: This spring caliper is versatile and perfect for drawing arcs, circles, index gauges, dividers, line segments, dimensional measurements, and more. 3、Excellent Carbon Steel Material: This spring caliper is made of excellent carbon steel material, which is sturdy and wear resistant, not easy to erode, and has a long service life. 4、Sliding Nut Design: This spring caliper has a sliding nut that can be locked in place, which in conjunction with spring tension allows for quick leg adjustments and repeatable measurements. 5、Compact And Lightweight: This spring caliper is small in size and light in weight, which is very convenient to carry and use when you go out for work.