6-8mm Digital Three-Point Internal Micrometer With Setting Ring, IP65 - Metav IndustryLine

Compact, workshop-ready digital three‑point internal micrometer combining 0.001 mm resolution, ±0.004 mm accuracy and IP65 protection for reproducible blind‑hole measurements; supplied with a setting ring and extension for immediate use. Order the M312.230.PN directly via Metav Werkzeuge or consult our specialists if further technical advice is required.

M312.230.PN — Digital three‑point internal micrometer, 6–8 mm, IP65 (Metav IndustryLine)

The M312.230.PN is a compact digital three‑point internal micrometer intended for precise internal diameter and blind‑hole inspection in fine mechanical and workshop environments.

• IP65-rated protection for workshop use
• Digital display with mm/inch and HOLD
• Measurement range 6–8 mm for fine work
• Includes setting ring and extension

Exceptional precision for small internal diameters

The three‑point contact geometry produces stable centring and repeatable readings on small bores, making this instrument ideal where tiny tolerances matter. With a resolution of 0.001 mm and a verified accuracy of 0.004 mm, the micrometer gives a measurable advantage in quality control tasks that demand consistent reproducibility. The measuring principle reduces eccentricity errors commonly seen with two‑point gauges, so measurements in blind holes remain reliable without extensive fixturing.

Built for the workshop — robust protection and handling

Engineered with an IP65 rating, the instrument tolerates coolant splashes and chips typical in production environments while maintaining measurement integrity. The moderate weight (approx. 0.7 kg) and compact frame support steady hand‑held use or mounting in a measuring station. Supplied in a transport case, the instrument is protected during storage and transit, and the solid construction minimises deformation for repeatable results across production runs.

Practical operation and ready‑to‑use accessories

The bright digital readout includes ON/PRESET, mm/inch selection and a HOLD function to simplify capture of readings in awkward positions. A setting ring and a precision extension are included for calibration and access to deeper blind holes, enabling immediate integration into inspection routines. Suitable for fine mechanical tasks, the micrometer covers the micro‑range encountered in watchmaking, toolmaking and small‑part assembly, while complying with DIN 863 for dimensional metrology.

Contact Metav Werkzeuge today to discuss specifying the M312.230.PN for blind‑hole inspection or to request a tailored application consultation via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: M312.230.PN
• GTIN: 4054469179063
• Label: Digital three‑point internal micrometer, 6–8 mm, IP65 with setting ring
• Standard: DIN 863
• Protection class: IP 65

Facts

• Measuring range: 6–8 mm
• Resolution: 0.001 mm
• Accuracy: 0.004 mm
• Weight: 0.7 kg
• Setting ring: size 8

Special features

• Digital readout with ON/PRESET, mm/inch and HOLD
• Data output: RB 6
• Includes setting ring and extension (100×Ø5.8)
• Suitable for blind‑hole measurements
• Supplied in a transport case

FAQ

What measuring range does the micrometer cover?
The M312.230.PN covers a measuring range of 6–8 mm, designed for very small internal diameters and fine mechanical components.

How precise is the digital readout?
The instrument offers a resolution of 0.001 mm and an accuracy of 0.004 mm, suitable for high‑precision workshop and inspection tasks.

Can the micrometer be used in areas with coolant and chips?
Yes — the IP65 protection rating of the digital three‑point internal micrometer ensures resistance to splashes and ingress common in workshop environments.

Does the product include accessories for blind holes?
The M312.230.PN is supplied with a setting ring and an extension (100×Ø5.8) to facilitate calibration and access to blind‑hole measurements.

Is there a data output for measurement capture?
The micrometer provides an RB 6 data output for integration with data acquisition systems or inspection software.

Metav IndustryLine: Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com