Mitutoyo 40–50 mm Holtest Internal Micrometer Series 568-369

Description

Arriving late September 2025 for delivery – Pre-order now

Condition: Used – well-worn with some gripping advantages: the hand grip rubber is missing and the neck bears engraved markings. Nonetheless, it produces accurate and repeatable results—tested to ±0.003 to 0.001 mm. No original case provided; currently packaged with care. A weathered 50 mm setting ring is included and is still serviceable for calibration.

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Product Overview

This Series 568-369 Holtest micrometer is a robust, three-point internal micrometer designed for precise measurement of bore diameters between 40 and 50 mm. With titanium-nitride coated contact points, it ensures durability and wear resistance for frequent usage. The three-point, self-centering mechanism, along with a ratchet stop, delivers reliable repeatability and user-friendly operation—making it a preferred choice among machinists, toolmakers, and metrology professionals.

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Features & Specifications

Specification	Detail
Series	568 (ABSOLUTE Digimatic Snap Bore Gauge)
Measuring Range	40 – 50 mm
Accuracy (Max Permissible Error)	±6 µm
Resolution	0.001 mm
Measuring Method	Three-point, self-centering
Contact Points	Titanium-nitride coated pins
Repeatability	Verified repeatable within 0.001–0.002 mm
Ratchet Stop	Yes, for consistent measuring force
Display & Interface	Digital LCD with absolute and incremental modes
Additional Features	GO/NG tolerance function, data hold, SPC output
Included Accessory	50 mm setting ring (weathered but functional)
Condition Notes	Missing hand grip rubber; engraved neck; no case

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Keywords

Holtest micrometer, Mitutoyo Series 568, 568-369, digital bore gauge, internal micrometer, three-point measurement, precision metrology, machinist tools.

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Manufacturer Reference

Mitutoyo Series 568 Absolute Digimatic Snap Bore Gauge – Official Product Page