Diameter Measurement Range - 50MM(1.97") to 160MM(6.23"), Measures bore to 150mm (5.9") deep
Unrivaled Precision - 0.01MM(0.0003 inches), clear and precise scales
Use after Zeroing - Before measuring, be sure to set the dial indicator pointer to the "0" position and select the appropriate size measuring head for measurement
Professional Quality - Self-centering measuring extension, chrome-plated handle and high-quality ABS storage case
Complete Range of Accessories - the kit includes 12 standard measuring heads of different lengths and a variety of small accessories to meet most of your inside diameter measurement needs