The 511703 Mitutoyo Dial Bore Gauge 50 to 150 mm MRM represents a precise, reliable solution for bore and slot measurements in demanding metrology environments. Designed by Mitutoyo and distributed through authorized partners such as Metrology Inc, this gauge combines durable construction with consistent accuracy for shop floor and laboratory use.
Engineered for 50 to 150 mm measuring range, the instrument minimizes parallax and delivers repeatable readings, helping teams maintain tight process control without excessive tooling costs.
| Item | Specification | Details |
|---|---|---|
| Model | 511703 | Mitutoyo Dial Bore Gauge |
| Measuring Range | 50 to 150 mm | Adjustable telescopic rod design |
| Dial Indicator | MRM Metrology Inc Standard | Shockproof, wide-view revolution indicator |
| Resolution | 0.01 mm | Consistent, readable measurements |
| Material | Hardened steel carbide tips | Long wear life and stable contact |
| Accuracy | ±0.02 mm | Traceable to national standards |
| Accessories | Assortment of anvils and spanners | Enables fast setup and calibration |
Key Operating Principles of the 511703 Gauge
Functionally, the 511703 Mitutoyo Dial Bore Gauge 50 to 150 mm MRM Metrology Inc uses a differential mechanism to convert bore diameter changes into needle movement on the dial. Operators position the gauge inside the bore, adjust the measuring span, and lock the rod in place, then read deviations directly from the indicator face. This approach reduces reliance on skilled interpretation of micrometer readings and supports faster, more consistent setup in production environments.
Setup, Calibration, and Repeatability Considerations
Proper calibration is essential to achieve the stated accuracy of ±0.02 mm across the 50 to 150 mm range. Before each measuring session, the gauge should be zeroed against a master bore or ring gauge within the range, and the dial indicator set to the zero position. Repeatability tests involve measuring a reference standard multiple times, ensuring that variation remains within expected tolerances and that the Mitutoyo dial bore gauge delivers dependable results shift after shift.
Material Compatibility and Surface Finish Effects
The hardened steel carbide tips on the 511703 minimize wear when contacting slightly rough or coated workpiece surfaces, helping maintain accuracy over extended use. However, highly irregular or excessively rough bore surfaces can still influence readings, so preliminary machining and consistent insertion technique remain important. By combining robust materials with careful handling, the gauge supports high levels of metrology performance across a wide range of part materials and finishes.
Integration with Production and Quality Workflows
In many machine shops and inspection departments, the 511703 Mitutoyo Dial Bore Gauge 50 to 150 mm MRM Metrology Inc is positioned as a go-to instrument for in-process checks and final verification of bores and slots. Its wide measuring range allows a single gauge to cover multiple part sizes, reducing gauge clutter and simplifying inventory. When paired with documented procedures, traceable calibration records, and digital data capture tools, the gauge helps teams maintain process capability and meet customer specification requirements efficiently.
Specifications and Recommended Practices
- Verify measuring range and resolution before selecting the gauge for a specific bore size
- Perform a zero check against a certified master standard at the start of each inspection session
- Use clean, gently guided insertion to protect the carbide measuring tips
- Document readings and calibration records to support traceability and process control
- Schedule periodic recalibration based on usage frequency and environmental conditions
FAQ
Reader questions
What is the 511703 Mitutoyo Dial Bore Gauge 50 to 150 mm MRM Metrology Inc best suited for measuring?
This gauge is designed for accurately measuring internal bore and slot diameters within the 50 to 150 mm range, making it suitable for machined components, bore inspections, and assembly verification in machine shops and quality departments.
How do I set up and zero the dial indicator before use?
Adjust the telescopic rods to a size slightly smaller than the target bore, insert the gauge, expand the rods until they contact the bore walls evenly, lock the rods, and then set the dial indicator to zero using a master ring or reference standard within the same measuring range.
What maintenance practices help preserve the accuracy of the 511703 gauge?
Regular cleaning after use, light lubrication of moving parts, storing in a low-humidity environment, and periodic calibration checks help protect the hardened carbide tips and dial mechanism against wear and drift.
Can this gauge be used in environments with temperature fluctuations or vibration?
While the gauge is built for demanding conditions, large temperature swings and strong vibration can affect reading stability; whenever possible, perform measurements in a stable environment or allow the gauge and parts to reach thermal equilibrium before critical checks.