Durable Craftsmanship: Tool steel construction with special processing delivers long life and reliable performance for repeated diameter measurements. Accurate Display: A large dial enables clear, precise readings for quick and convenient diameter checks, reducing measurement time and error. Versatile Probes: Includes multiple specifications and interchangeable probes to cover different inner diameter measurement needs. Strength Probes: Hardened probes resist wear, maintaining precision when measuring cylinders and other inner holes. Applications Automotive and industrial maintenance: verify bore diameters in cylinders and other internal features during service or refurbishment. Machining and quality control: inspect inner diameters of machined housings, sleeves, and bushings to ensure tolerance compliance. Tool setup and inspection in workshops: select appropriate probe specifications for fast, inprocess inner diameter checks.