About This 【MEASURE SMALL BORES OTHER GAUGES MISS】 With a wide 0.7" to 6" measuring range, this digital bore gauge covers small engine cylinders, motorcycle bores, ATV cylinders, automotive engine blocks, hydraulic cylinders, sleeves, and bearing housings. 【23 ANVILS & DUAL MEASURING RODS】 Includes 23 interchangeable anvils and 2 measuring rods for flexible setup across different bore sizes. Covers 0.7"-1.5", 1.4"-2", and 2"-6" measuring ranges for more complete internal diameter inspection. 【DETECT WEAR, TAPER & OUT-OF-ROUND】 The two-point self-centering contact design helps identify cylinder wear, taper, ovality, and out-of-round conditions before assembly, repair, or machining, helping reduce costly rebuild mistakes. 【DIGITAL LCD READINGS WITH NO GUESSWORK】 The digital indicator provides clear readings with 0.0005" resolution and inch/mm conversion, reducing manual reading errors compared with traditional dial indicators in busy workshop environments. 【COMPLETE PROFESSIONAL KIT WITH CASE】 Includes digital indicator, 2 measuring rods, wheel guides, plate guide, 23 anvils, washers, sub-anvil, and durable ABS storage case to keep all accessories organized, protected, and ready for workshop use.