Precision Three-Point Internal Micrometer 6-50mm – Self-Centering Bore Gauge with Carbide Tips & Setting Ring
- Self-centering 3-point for accurate measurement of internal diameters and through hole measurements (6-50mm).
- measurement can be taken closer to the buttom of the blind bore and can be taken into a deep hole with an extension rod
- Features self-centering carbide tips, ratchet thimble, and includes calibration ring. Resolution: 0.001mm (<12mm), 0.005mm (>12mm).
Product Description:
Three-Point Internal Micrometer 6-50mm – Precision Bore Measurement with Self-Centering Design
Experience exceptional accuracy in internal diameter measurements with our professional three-point internal micrometer. Specifically designed for both blind and through holes, this micrometer features a self-centering mechanism that ensures perfect alignment and reliable measurements. The carbide-tipped measuring contacts (excluding 6-12mm models) provide excellent wear resistance, while the included calibration ring guarantees ongoing accuracy. With resolution up to 0.001mm and ratchet thimble for consistent measuring force, this tool is ideal for precision machining, quality control, and manufacturing applications.
📊 Technical Specifications:
| Model Number (Silver) | Model Number (Black) | Measuring Range | Accuracy | Setting Ring | L1 Dimension | A Dimension | Extension Rod |
|---|---|---|---|---|---|---|---|
| H-315-04-050 | H-315-04-150 | 12-16mm | 0.004mm | Φ16mm | 80mm | 0.5mm | 150mm |
| H-315-05-050 | H-315-05-150 | 16-20mm | 0.004mm | Φ16mm | 80mm | 0.5mm | 150mm |
| H-315-06-050 | H-315-06-150 | 20-25mm | 0.004mm | Φ25mm | 90mm | 0.5mm | 150mm |
| H-315-07-050 | H-315-07-150 | 25-30mm | 0.004mm | Φ25mm | 90mm | 0.5mm | 150mm |
| H-315-08-050 | H-315-08-150 | 30-40mm | 0.004mm | Φ40mm | 97mm | 0.5mm | 150mm |
| H-315-09-050 | H-315-09-150 | 40-50mm | 0.005mm | Φ40mm | 97mm | 0.5mm | 150mm |
Resolution:
-
0.001mm for measurements under 12mm
-
0.005mm for measurements over 12mm
Additional Features:
-
Ratchet thimble for consistent measuring force
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Self-centering three-point design for automatic alignment
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Carbide measuring faces (on models above 12mm)
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Includes precision calibration ring
-
Suitable for both blind and through holes
⚙️ Key Features:
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Self-Centering Design: Three-point contact ensures automatic alignment and accurate measurements
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Carbide-Tipped Contacts: Exceptional wear resistance for long-term accuracy (on models above 12mm)
-
Precision Calibration: Includes setting ring for easy verification and calibration
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Dual Resolution: 0.001mm resolution for small diameters, 0.005mm for larger measurements
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Ratchet Mechanism: Provides consistent measuring force for repeatable results
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Blind Hole Capability: Specifically designed to measure both blind and through holes
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Professional Accuracy: Maintains precision up to 0.004mm across most ranges
🛠️ Applications:
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Precision machining and tool rooms
-
Quality control and inspection departments
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Automotive engine cylinder measurement
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Hydraulic cylinder and pneumatic tube inspection
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Mold and die manufacturing
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Aerospace component measurement
-
Mechanical engineering and research
📞 Additional Information:
Note: Models measuring 6-12mm feature steel measuring faces, while all larger models include carbide-tipped contacts for enhanced durability.
Available in Two Finishes:
-
Silver finish models (H-315-XX-050)
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Black finish models (H-315-XX-150)
Each micrometer comes with a protective case, calibration certificate, and operation manual. The included setting ring ensures ongoing measurement accuracy throughout the tool’s lifespan.
[Request Catalog] for complete size specifications or [Contact Us] for custom set configurations and volume pricing.
