Internal Dial Caliper Gauge The Internal Dial Caliper Gauge is a precision measuring instrument designed for accurate measurement of internal diameters, bore sizes, cylindrical workpieces, and recessed groove diameters. It is widely used in machining, manufacturing, automotive, engineering, quality control, and inspection applications where reliable internal dimensional measurement is required. The gauge operates on a comparative measurement principle and should be preset using a micrometer or ring gauge to the required standard dimension. A set of interchangeable contact points is supplied, allowing the instrument to cover a wide range of internal dimensions with high accuracy and repeatability. Features • Measures Internal Diameters of Cylindrical Components • Suitable for Recessed Groove Diameter Measurement • High Accuracy Comparative Measurement • Dial Indicator Display for Easy Reading • Supplied with Interchangeable Contact Points • Wide Measuring Range Coverage • Ideal for Bore and Internal Dimension Inspection • Suitable for Precision Engineering Applications • Durable and Reliable Construction • Easy Setup Using Micrometer or Ring Gauge Technical Specifications Model: YM-880 • Graduation: 0.01 mm • Measuring Range: 20 – 35 mm • Indicating Range: 2 mm • Accuracy: ±20 µm • Measuring Force: ≤ 3 N • Weight: 196 g • Maximum Depth (A): 70 mm Applications: Small Bore Measurement, Internal Diameter Inspection, Groove Diameter Measurement --- Model: YM-881 • Graduation: 0.01 mm • Measuring Range: 30 – 62 mm • Indicating Range: 2 mm • Accuracy: ±20 µm • Measuring Force: ≤ 3 N • Weight: 218 g • Maximum Depth (A): 75 mm Applications: Medium Bore Measurement, Internal Inspection, Engineering Components --- Model: YM-882 • Graduation: 0.01 mm • Measuring Range: 55 – 153 mm • Indicating Range: 2 mm • Accuracy: ±20 µm • Measuring Force: ≤ 3 N • Weight: 240 g • Maximum Depth (A): 90 mm Applications: Large Bore Measurement, Internal Diameter Verification, Precision Engineering Applications • Internal Diameter Measurement • Bore Inspection • Groove Diameter Measurement • Cylindrical Component Inspection • Automotive Components • Manufacturing Quality Control • Engineering Measurement • Tool Room Inspection • Machine Shop Applications • Precision Internal Measurement Product Video: Paste YouTube Video Link Here For more information about the Internal Dial Caliper Gauge, please contact us at 08045134493 or email [vhk_08@yahoo.com](mailto:vhk_08@yahoo.com). Our team will be happy to assist you with product specifications, pricing, and application support.