0.01 mm accuracy with a measuring range of 50 mm to 160 mm. One end has a movable probe while the opposite end uses replaceable probes sized for the bore aperture. Main function - Designed for measuring workpiece diameter. A professional Cylinder Dial Bore Gage suitable for hobby machinists and mechanics. - commonly used to measure automotive parts or cylinders and to easily check ovality or out-of-roundness. Materials and build - Stainless steel and plastic construction for durability and long service life. - Carbide-tipped points on the probes provide extended wear and improved abrasion resistance. What you get - Package includes 1 x Dial Bore gauge, 12 x probes, 2 sets of accessories, and an ABS storage case. How it helps - Precise diameter measurement of cylindrical parts in manufacturing and maintenance. - Quick checks for bore size, concentricity, and roundness to support quality control and accurate fitting. Use scenarios - Inspect engine cylinder bores during engine rebuilds to verify diameter and uniformity. - Measure automotive components such as cylinders, pistons, and sleeves for wear and ovality. - General cylindrical part checks in hobby machining, fabrication, or repair work. Service and support - We provide professional parts and reliable service. If you have questions, contact us by email for more information. We aim to respond promptly.