1.Technical Parameters: Dial bore gauge measuring range of 26 inches, resolution of 0.001 inches, display range of 00.5 inches, dial diameter of 57 mm / 2.2 inches. Wide measuring range, can adapt to different sizes of workpieces, and can meet the needs of different work scenarios, to ensure its measurement accuracy and reliability 2.Tool Steel: Dial Indicator bore gauge kits are made of tool steel with precise craftsmanship and special processing to ensure durability. High tensile and yield strength, can withstand large forces and pressures, not easy to deformation or fracture, long life, to ensure stable and accurate measurement results 3.Clear Scale: Dial indicator fine workmanship, large dial design, clear and accurate scale, easy and fast to use.Hole indicator measuring Simple and intuitive scale layout makes the measurement process more efficient and accurate, you can quickly get the desired measurement results 4.Practicality: Multispecification and multiprobe to meet the measurement needs of different internal diameters. High strength hardened probe, suitable for high strength measurement. You can choose the appropriate probe and specifications according to specific needs, so as to obtain accurate and reliable measurement results