Starting price
฿3,200
/ mm
Mitutoyo 103-177 Outside Micrometer 0–25 mm
Model: 103-177
The Mitutoyo 103-177 is a 0–25 mm outside micrometer with 0.001 mm resolution, built for high-precision dimensional metrology. Hardened steel construction with a thimble lock and included setting standard ensures repeatable zeroing across shifts. Widely used in Thai automotive, machinery, and dimensional calibration labs requiring NIMT-traceable certificates. Its ±0.001 mm accuracy makes it the standard choice for tight-tolerance part inspection.
Meas. Range
0–25 mm
Accuracy
±0.001 mm
Specifications
| Accuracy | ±0.001 mm |
| Material | Hardened steel |
| Resolution | 0.001 mm |
| Measuring Force | 5–10 N (via ratchet stop) |
| Measuring Range | 0 – 25 mm |
| Included Accessories | 25 mm setting standard |
Use Cases
Measuring shaft diameters, pistons, gear components, and precision castings with tight tolerances. Also used in gauge block verification during calibration lab audits.
Frequently Asked Questions
How often should a micrometer be calibrated?+
Every 6–12 months depending on usage frequency. SPC processes requiring Gauge R&R typically mandate 6-month intervals to ensure Cg ≥ 1.33 is maintained.
Should I zero-check before each use?+
Yes — verify zero with the setting standard at the start of each shift or after any drop or impact to prevent undetected bias in measurements.
What does ±0.001 mm accuracy mean in practice?+
The measured value will deviate from the true value by no more than 1 micron — sufficient for IT6 tolerance grade parts in most Thai industrial applications.
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