1、[Multi Functional] This vernier caliper is designed with a compass, making it a versatile tool capable of measuring and accurately drawing arcs and line segments. 2、[150mm Measurement] Our compass caliper has a 0 to 150mm specification with a 0.1mm division value, ensuring precise and accurate readings for your work. 3、[User Friendly] Our caliper is ergonomically designed, provides a comfortable hand feel and smoothly operation. It comes with a locking device for efficient use and secure measurements. 4、[Reliable Materials] The caliper measuring tool uses stainless steel and alloy materials for excellent durability and reliability, serving you for extended periods. 5、[Long Lasting] The main ruler and scale frame marking surface undergo heat treatment process while the measurement surface is hardened to up to HRC54, providing exceptional wear resistance.