Internal Micrometer 25-50 mm Type B, Carbide Tips, 0.01 mm, DIN 863

Precision bore measurement in machine shops and quality labs demands a tool that combines accuracy with durability. This internal micrometer, with a 25–50 mm range and 0.01 mm resolution, is built for exactly that. Its ratchet thimble and carbide-tipped measuring faces ensure consistent, repeatable readings on hardened steel components, while the satin chrome finish resists corrosion and glare. Whether checking cylinder bores, bearing seats, or groove diameters, the included 25 mm setting ring simplifies calibration, and the protective case keeps the instrument safe between uses.

Key specifications

• Measurement range: 25–50 mm
• Resolution: 0.01 mm
• Accuracy: ±0.005 mm
• Measuring faces: Carbide-tipped
• Thimble type: Ratchet stop
• Material: Hardened tool steel, satin chrome finish
• Standard: DIN 863
• Includes 25 mm setting ring and protective case

Why choose it

Carbide measuring faces provide excellent wear resistance, maintaining accuracy over thousands of measurements. The ratchet stop applies consistent pressure, reducing operator influence and improving repeatability. The satin chrome finish not only protects against corrosion but also minimizes glare, making the scale easier to read in bright workshop lighting. With a spindle pitch of 0.5 mm, fine adjustments are smooth and precise, and zero adjustment is possible for calibration.

Ideal use cases

• Measuring internal diameters of bores, holes, and grooves
• Quality control in machining and manufacturing
• Inspecting bearing seats and cylinder bores
• Toolroom and metrology lab applications

Good to know

The micrometer uses a metric measuring system and features an integrated anvil for internal measurements. It comes with a 25 mm setting ring for quick zero verification. The protective plastic case ensures safe storage and transport. The instrument is part of the Shahe 204 Series, known for reliable precision tools.