Precise inner diameter measurement Achieve accurate measurement of inner diameters with a precision of 0.01 mm, ideal for assessing size and shape errors in various inner holes. Durable stainless steel construction Built from stainless steel to withstand wear and tear and provide reliable performance. hardness design Features hardness for long lasting durability in demanding environments. Portable and user friendly Ergonomically designed for easy handling, lightweight and portable for both professional and use. Typical use scenarios Quality control in manufacturing and machining: verify bore sizes during part inspection to ensure parts meet spec. Tool setup and calibration: confirm consistent inner hole dimensions when preparing tools or fixtures. Maintenance and inspection: assess bore wear and roundness in automotive, hydraulic, or hydraulicrelated components.