Description
Condition: This Mitutoyo 506-251-30 digital micrometer is used but presents in near-new condition. The micrometer itself shows no noticeable wear, while the supplied setting standard has seen prior use. It has been tested and verified for accuracy and repeatability.
The 506-251-30 is a high-precision digital micrometer for external measurements in the 25–50 mm range. It features a non-rotating spindle anvil, meaning the measuring face stays fixed while the spindle advances — reducing torsion on the workpiece and allowing more stable, accurate measurements. Combined with a ratchet stop for uniform measuring force, this design ensures excellent repeatability even in demanding applications. The unit is equipped with carbide-tipped measuring faces, a clear digital LCD display, and SPC data output compatibility for integration into inspection systems.
Mitutoyo’s reputation for reliability and precision makes this micrometer a trusted choice for machinists, toolmakers, and quality control professionals.
Features & Technical Specifications
| Parameter | Detail |
|---|---|
| Condition | Used, like new presentation; setting standard is used |
| Model | 506-251-30 |
| Measuring Range | 25 mm – 50 mm |
| Resolution | 0.001 mm |
| Accuracy | ±3 µm |
| Measuring Faces | Carbide-tipped, flat and parallel |
| Spindle / Anvil | Non-rotating anvil design, ratchet stop for constant force |
| Display | Large LCD readout |
| Functions | Zero/preset, hold, auto power-off |
| Data Output | SPC compatible for measurement logging |
| Power Supply | SR44 battery |
| Accessories | Case, original paperwork, setting standard |
| Repeatability | Verified for accuracy and smooth measurement |
Applications & Keywords
- Precision external measurement of machined components
- Ideal for toolrooms, inspection labs, and metrology environments
- Ensures repeatability and accuracy with non-rotating anvil design
- Trusted by machinists and quality control professionals
Keywords: Mitutoyo 506-251-30, digital micrometer 25–50 mm, non-rotating spindle anvil, SPC micrometer, carbide measuring faces, precision metrology tool, machinist micrometer
