Spring Compass with Jointed Joint - [8 Inch] Adjustable Carbon Steel Inner Compass with Solid Nut for Drawing and Metalworking, Silver Tone

1- PACKAGE CONTENTS - 1 adjustable inner compass of 8 inches maximum opening length. 2- MATERIAL - Made of carbon steel with heat treatments, ensuring wear resistance, hardness and long service life. 3- APPLICATION - A useful measurement transfer tool for measuring the inside diameter or width of the groove of a cylindrical hole, and then transfer this measurement to a ruler. 4- CARBON STEEL BRANCHES - Hardened carbon steel temples feature hardened tips, allowing precise marking on parts, which can be easily adjusted through an adjustment nut, ensuring accurate measurements and fine adjustments. 5- NOTE: For accurate measurement, please make sure the object to be measured is stable. Clamps or other methods can be used to fix objects to avoid interference and errors.