Description
Product Overview
This Mitutoyo Digital Holtest is a premium three-point internal micrometer designed for the rapid and highly accurate measurement of small bores in the 6mm to 8mm range.
- Three-Point Contact: Unlike two-point calipers that can rock inside a hole, this gauge uses three self-centering anvils spaced at 120°. This geometry automatically aligns the tool squarely within the bore, ensuring you capture the true diameter every time.
- Digimatic Readout: The digital LCD screen provides an instant, error-free reading (typically down to a 0.001mm resolution). This completely eliminates the need to squint at tiny mechanical vernier scales in poorly lit shop environments.
- Ratchet Stop: Equipped with a constant-force ratchet mechanism on the thimble. This ensures the exact same measuring pressure is applied to the anvils during every use, guaranteeing repeatable results regardless of the operator’s touch.
- Small Bore Capability: Measuring accurately under 10mm is notoriously difficult; this specialized Holtest makes it a fast and reliable process.
Condition
Used (Tested & Accurate / Bare Tool + New Ring).
This Holtest has been tested, operates smoothly, and provides reliable, accurate measurements.
- Included Bonus: It comes paired with a Brand New ~6mm Mitutoyo Setting Ring. Having a genuine master ring is a massive value-add, as it is the only way to properly calibrate a three-point micrometer before critical work.
- Missing Components: Please note that this unit does not come with its original storage box, factory paperwork, or adjustment spanners.
Brand Information
Mitutoyo Corporation (est. 1934) is the undisputed global benchmark for dimensional metrology. Their “Holtest” series is widely considered the best internal bore measurement system in the world, prized for its ability to hold microscopic tolerances even after years of shop-floor use.
Specifications
| Feature | Specification |
| Brand | Mitutoyo (Japan) |
| Type | Digital Holtest (Three-Point Internal Micrometer) |
| Measuring Range | 6mm – 8mm |
| Thimble Type | Ratchet Stop |
| Included Accessories | New ~6mm Mitutoyo Setting Ring |
| Missing Components | No Box, No Papers, No Spanners |
| Condition | Used / Tested & Accurate |
Keywords
Mitutoyo digital holtest, 6-8mm bore gauge, internal micrometer, three point micrometer, Mitutoyo setting ring, small bore gauge, Digimatic holtest, machinist tools, Japanese metrology.
