25-30mm Digital Three-Point Internal Micrometer With Carbide Measuring Faces, IP65, Calibration Certificate, Case - Metav IndustryLine

Take advantage of IP65 protection, carbide measuring faces and a 0.001 mm resolution for repeatable internal measurements; the instrument is also suited to blind‑hole bores and includes a setting ring plus extension—order directly via Metav Werkzeuge or consult our specialists for application advice.

Digital three-point internal micrometer M312.236.PN — IP65, carbide measuring faces (25–30 mm)

The Digital three-point internal micrometer M312.236.PN is a compact, workshop-ready instrument designed for precise internal diameter checks and blind‑hole measurement in production and toolmaking environments.

• Digital readout mm/inch with ON/PRESET/HOLD
• IP65 dust and splash protection
• Carbide measuring faces for wear resistance
• Measuring range 25–30 mm
• Delivered with setting ring and extension

Accurate centring and measurable benefit for QC

The three‑point contact design produces a reliably centred measurement across the bore, reducing reading variability that arises from off‑centre probes. With a resolution of 0.001 mm and an indicated accuracy of ±0.005 mm, this digital instrument gives a measurable improvement in repeatability compared with coarser mechanical gauges. The fine resolution is particularly beneficial for small‑diameter bores where traceable tolerances must be verified quickly on the shop floor; the device converts raw contact into directly comparable numerical results, aiding statistical process control and first‑article inspection.

Built to endure the shop environment

Rated IP65, the measuring head tolerates dust ingress and water jets typical for busy production areas, which reduces downtime caused by instrument failure or excessive maintenance. The carbide measuring faces (hard metal) resist wear during repeated contact with steel and non‑ferrous components, extending service life and maintaining measurement integrity. Conforming to DIN 863, the design balances robustness and ergonomics so that frequent checks can be made without sacrificing accuracy—ideal for medium‑volume inspection loops and quality gates.

Practical handling and digital integration

The instrument’s digital display offers mm/inch switching, ON/PRESET and HOLD functions for convenient readout and transfer of values. A dedicated RB 6 data output facilitates connection to inspection software or a handheld logger for documentation and trend analysis. Supplied accessories include a setting ring for quick zeroing and an extension to reach deeper bores—features that convert a single tool into a flexible measuring solution for a variety of components. Lightweight at approximately 1 kg and covering the 25–30 mm range, it is suited to fast, repeatable checks without cumbersome setup.

For precise internal measurements from a trusted partner, request the Metav IndustryLine M312.236.PN via Metav Werkzeuge in Emmerich — technical advice and order support are available by email or phone through Metav Werkzeuge

Technical Data

• Article number: M312.236.PN
• GTIN: 4054469179124
• Brand: Metav IndustryLine
• Label: Digital‑three‑point internal measuring instrument, 25–30 mm, IP65, carbide faces, setting ring

Facts

• Measuring range: 25–30 mm
• Resolution (display): 0.001 mm
• Accuracy: 0.005 mm
• Weight: 1 kg
• Protection class: IP65
• Standard: DIN 863

Special features

• Carbide (HM) measuring faces
• Digital display with ON/PRESET, mm/inch and HOLD
• Data output: RB 6
• Suitable for blind‑hole (sackloch) bores
• Includes setting ring and extension
• Extension specification: 150xØ15,8

FAQ

How does the three‑point system improve measurement of internal diameters?
The three‑point contact of the M312.236.PN ensures automatic centring in the bore, producing a stable diameter value that reduces positional error compared with single‑point probes.

What level of resolution and accuracy does the instrument provide?
The instrument offers a display resolution of 0.001 mm and an indicated accuracy of ±0.005 mm, making it suitable for fine inspection tasks and small‑tolerance checks.

Can the gauge measure blind‑hole bores and deeper cavities?
Yes; the device is specified for blind‑hole measurement and is supplied with an extension to reach deeper bores while maintaining the three‑point contact principle.

Is the instrument protected for use in a production environment?
The M312.236.PN has an IP65 rating and carbide measuring faces, which together provide resistance to dust, splashes and wear typical in shop conditions.

How can measurement data be recorded or exported?
Data can be taken from the instrument via the RB 6 output for logging, process control or integration into measurement software.

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