40–50mm Digital Three-Point Internal Gauge With Carbide Measuring Faces, IP65, Setting Ring - Metav IndustryLine

Benefit from precise, wear‑resistant internal measurements thanks to carbide measuring faces and an accuracy of ±0.005 mm; the IP65 rating ensures reliable operation in workshop environments. Order the Digital three‑point internal micrometer M312.238.PN directly via Metav Werkzeuge or consult the specialists for application advice.

Digital three‑point internal micrometer M312.238.PN — IP65, carbide measuring faces, 40–50 mm

The Digital three‑point internal micrometer M312.238.PN is a compact, high‑precision instrument for measuring internal diameters in production, workshop and inspection tasks, ideally suited to blind‑hole checking and repeatable bore control.

• IP65 protection for workshop environments
• Carbide measuring faces for wear resistance
• Digital display with mm/inch and HOLD
• Delivered with setting ring and extension

Precision and wear resistance for internal bores

The three‑point design delivers a self‑centring measuring action, reducing alignment error and improving repeatability over single‑point probes. With carbide measuring faces, the instrument resists wear on contact surfaces, extending service life where frequent bore checks are required. The nominal measurement range of 40–50 mm places this instrument in the compact/micro category for fine mechanical work, offering the stiffness and short‑jaw advantage needed for small bores while maintaining practical reach for many workshop tasks.

Reliable measurement under workshop conditions

Built to withstand everyday shop use, the micrometer features an IP65 enclosure that protects electronics from dust and water jets, so readings remain stable even in harsher environments. The digital display supports ON/PRESET, mm/inch conversion and a HOLD function for secure reading capture; the display resolution is 0.001 mm, supporting fine adjustment and clear numerical readout. The combination of protection and a precise readout reduces scrap and rework by enabling faster, more confident decisions on the shop floor.

Ready‑to‑use accessories and application focus

Delivered with a setting ring and an extension, the instrument is ready for immediate zero setting and for measuring slightly recessed features. The construction and three‑point geometry make it particularly suitable for blind‑hole measurement, where consistent contact and centring across the bore diameter are essential. Compliance with DIN 863 underlines suitability for standard inspection routines, and the compact form helps to integrate the micrometer into routine quality checks without time‑consuming setup.

Data transfer and quality documentation

For integration into traceability workflows the micrometer provides an RB 6 data output to record results directly into data collection systems, supporting statistical process control and documentation. The instrument’s quoted accuracy of ±0.005 mm and reproducible measuring principle help to reduce process variation and speed up inspection cycles, so production throughput benefits from fewer stoppages and corrective measures. Clear numeric output and a robust mechanical design combine to support reliable quality control in small‑bore measurement tasks.

For workshop‑grade, traceable bore measurement from Metav IndustryLine — the M312.238.PN three‑point digital micrometer with IP65 protection and carbide faces — contact Metav Werkzeuge by eMail at info@metav-werkzeuge.com or by phone at +49 2822 7131930

Technical data

• Article number: M312.238.PN
• GTIN: 4054469179148
• Description: Digital three‑point internal micrometer 40–50 mm, IP65, carbide measuring faces, setting ring
• Category: Micrometers
• Norm: DIN 863
• Data output: RB 6

Facts

• Measuring range: 40–50 mm
• Accuracy: ±0.005 mm
• Display resolution: 0.001 mm
• Weight: 1 kg
• Extensions: 150 x Ø23.5
• Tariff number: 90173000

Special features

• Carbide measuring faces
• IP65 protection
• Digital display with ON/PRESET, mm/inch and HOLD
• Includes setting ring and extension
• Three‑point measuring principle for self‑centring measurement
• Suitable for blind‑hole measurement
• Complies with DIN 863

FAQ

How accurate is the micrometer for routine inspection tasks?
The M312.238.PN provides an accuracy of ±0.005 mm and a display resolution of 0.001 mm, suitable for precise routine inspection and small‑bore measurement.

Can the instrument measure blind holes?
Yes, the three‑point geometry and included extension make the micrometer appropriate for blind‑hole measurement, ensuring stable contact across the bore.

What data output is available for quality documentation?
This instrument includes an RB 6 data output for direct transfer of readings into data logging or SPC systems.

Is the device protected against dust and coolant?
The micrometer is rated IP65, offering protection against dust ingress and low‑pressure water jets, making it robust for workshop conditions.

Which accessories are supplied with the micrometer?
The delivery includes a setting ring for zero setting and an extension to facilitate recessed measurements.

Does the instrument comply with industry standards?
The device is specified to comply with DIN 863, aligning it with common workshop and inspection requirements.

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