Mitutoyo, 368-920, Mechanical Holtest Three-Point Internal Micrometers, 4 Gage Set 4-8″
Features:
- Optional extension rod allows for measuring deep holes
- Scale on thimble and sleeve is laser etched for easier reading in all conditions
- Holtests up to 100mm / 4″ diameter measurements supplied in a fitted plastic case
- Holtests over 100mm / 4″ diameter measurements supplied in a wooden case
The Mitutoyo mechanical Holtest internal micrometer set includes complete gages (micrometer head units and measuring heads) for each size. Three hardened-steel anvils evenly spaced at 120° allow for true alignment of the axis bore for accurate, easily repeatable measurements. The holtest’s ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.
Technical Details
| Technology: | Mechanical |
| Ratchet/Thimble: | Ratchet Stop |
| Contact Point: | TiN coating |
| Measuring Method: | Three-point method |
| Units: | Inch |
| Range: | 4-8″ |
| Graduation: | 0.0002″ |
| Accuracy: | ±0.00025″ |
| Setting rings included: | .5, 7 |
| Individual Range: | 5-6, 6-7, 7-8, 3-5″ |
| Remarks: | with extension rod |
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