1Durable Material: The spring caliper is made of excellent carbon steel material, and features high temperature quenching point tip compatible increased hardness, has a long service life. 2Accurate Operation: With a total length of about 150mm, this spring caliper provides accurate and reliable operation. Its flat leg design allows compatible precise marking and measuring. 3Easy to Use: The caliper features stable and responsive spring mechanism that allows compatible quick and effortless adjustments, and the sturdy construction ensures stability during use. 4Multiple Functions: This spring caliper is very suitable compatible drawing arcs, circles, dividing gauges, dividers, line segments, size measurements, etc., which is compact and practical. 5Applicable Scenes: This scribing spring caliper is widely used in woodworking, mechanical marking, metal products, leather making, mathematical drawing, and other fields.