Three Point Internal Micrometers The Three Point Internal Micrometer is a high-precision instrument designed for accurate measurement of internal diameters, bores, blind holes, and deep holes. The three-point measuring system provides excellent centering and stability, ensuring highly accurate and repeatable measurements compared to conventional bore gauges. Equipped with carbide-tipped contact points and a ratchet stop mechanism, the micrometer delivers consistent measuring force and long-term durability. It is widely used in precision engineering, automotive manufacturing, aerospace, machine shops, quality control laboratories, and metrology applications. The instrument can measure closer to the bottom of blind holes and can be extended for deep-hole measurement using the supplied extension rod. Features • Three-Point Self-Centering Measurement System • Suitable for Blind Hole and Deep Hole Measurement • Carbide-Tipped Measuring Contacts • Ratchet Stop for Consistent Measuring Force • High Accuracy and Repeatability • Excellent Bore Centering Capability • Extension Rod Included • Suitable for Precision Internal Diameter Measurement • Durable Industrial Construction Technical Specifications Graduation • Up to 12 mm Range: 0.001 mm • Above 12 mm Range: 0.005 mm --- Model: 340-008 • Range: 6 – 8 mm • Accuracy: ±4 µm • Setting Ring: Ø6 mm Included • Extension Rod: 100 mm Included --- Model: 340-010 • Range: 8 – 10 mm • Accuracy: ±4 µm • Setting Ring: Ø8 mm Included • Extension Rod: 100 mm Included --- Model: 340-012 • Range: 10 – 12 mm • Accuracy: ±4 µm • Setting Ring: Ø10 mm Included • Extension Rod: 100 mm Included --- Model: 340-016 • Range: 12 – 16 mm • Accuracy: ±4 µm • Setting Ring: Ø16 mm Included • Extension Rod: 150 mm Included --- Model: 340-020 • Range: 16 – 20 mm • Accuracy: ±4 µm • Setting Ring: Ø16 mm Included • Extension Rod: 150 mm Included --- Model: 340-025 • Range: 20 – 25 mm • Accuracy: ±4 µm • Setting Ring: Ø25 mm Included • Extension Rod: 150 mm Included --- Model: 340-030 • Range: 25 – 30 mm • Accuracy: ±4 µm • Setting Ring: Ø25 mm Included • Extension Rod: 150 mm Included --- Model: 340-040 • Range: 30 – 40 mm • Accuracy: ±4 µm • Setting Ring: Ø40 mm Included • Extension Rod: 150 mm Included --- Model: 340-050 • Range: 40 – 50 mm • Accuracy: ±5 µm • Setting Ring: Ø40 mm Included • Extension Rod: 150 mm Included --- Model: 340-063 • Range: 50 – 63 mm • Accuracy: ±5 µm • Setting Ring: Ø62 mm Included • Extension Rod: 150 mm Included --- Model: 340-075 • Range: 62 – 75 mm • Accuracy: ±5 µm • Setting Ring: Ø62 mm Included • Extension Rod: 150 mm Included --- Model: 340-088 • Range: 75 – 88 mm • Accuracy: ±5 µm • Setting Ring: Ø87 mm Included • Extension Rod: 150 mm Included --- Model: 340-100 • Range: 87 – 100 mm • Accuracy: ±5 µm • Setting Ring: Ø87 mm Included • Extension Rod: 150 mm Included Applications • Internal Diameter Measurement • Bore Measurement • Blind Hole Inspection • Deep Hole Measurement • Precision Engineering Applications • Automotive Components Inspection • Aerospace Manufacturing • Tool Room Measurement • Metrology Laboratories • Quality Control Inspection Product Video: Paste YouTube Video Link Here For more information about the Three Point Internal Micrometers, 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.
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