30–40mm Three-Point Internal Digital Bore Gauge With Carbide Measuring Faces, IP65, Setting Ring, Supplied In Case - Metav IndustryLine

Benefit from high-precision, repeatable internal measurements thanks to the three-point contact system and an accuracy of ±0.005 mm, combined with IP65 protection and carbide measuring faces for long-term wear resistance; order directly via Metav Werkzeuge or speak with our consultants for tailored advice.

Digital three-point internal micrometer M312.237.PN — 30–40 mm range, IP65, carbide faces (Metav IndustryLine)

A Digital three-point internal measuring instrument M312.237.PN designed for reliable bore inspection and blind‑hole measurement in workshop and production environments.

• Digital display with mm/inch and HOLD
• IP65 protection for shop floor use
• Carbide measuring faces for wear resistance
• Range 30–40 mm, accuracy ±0.005 mm

Precision where bore quality matters

The three-point contact geometry provides stable centring in cylindrical bores, translating small radial deviations into reliable axial readings. With an indicated accuracy of ±0.005 mm and a resolution of 0.001 mm, the instrument is suitable for demanding inspection tasks where repeatability reduces rework. The design supports measurements in standard and blind bores, and conformity to DIN 863 makes it compatible with established workshop procedures. The three-point arrangement ensures consistent seating in the bore, improving repeatability over single-contact probes.

Built for continuous use on the shop floor

Durability is achieved through carbide measuring faces and an IP65 rating that keeps out dust and low-pressure water jets, allowing the device to be used close to machining centres without excessive protective measures. The solid construction and a mass of around 1 kg provide the stiffness needed for stable handling, while the wear-resistant contact tips extend service intervals. These attributes lower downtime and maintain measurement quality under real production conditions, so fewer measurements need repeating and throughput remains steady.

Clear readings and practical data handling

The digital display provides rapid readout switching between mm/inch, plus ON/PRESET and HOLD functions for timed readings. Data output via RB 6 enables direct transfer to inspection software or data loggers for traceable process control. Included accessories such as the setting ring (40 mm) and an extension (150 x Ø23.5) allow quick verification and measurement of deeper bores without additional tools. This combination of intuitive display, data connectivity and calibration aid speeds up inspection cycles and reduces operator error.

Efficiency and confidence for quality teams

Engineered for repeatable results, the instrument supports efficient quality routines in small-batch shops as well as larger production runs. The integrated features simplify documentation and traceability, making the tool a pragmatic choice where reproducible internal measurements are essential. Backed by Metav’s role as a precision partner, the device aligns with an approach that brings high‑quality metrology within reach of workshops and maintenance teams, supporting consistent output and fewer rejects.

Speak to Metav Werkzeuge for tailored advice on the M312.237.PN — Metav’s specialists can confirm suitability for specific bore geometries and production routines; contact info@metav-werkzeuge.com or call +49 2822 7131930 to discuss requirements.

Technical data

• SKU: M312.237.PN
• GTIN: 4054469179131
• Product type: Digital three-point internal micrometer
• Brand: Metav IndustryLine

Facts

• Measuring range: 30–40 mm
• Resolution: 0.001 mm
• Accuracy: ±0.005 mm
• Weight: 1 kg
• Protection class: IP65
• Setting ring: 40 mm
• Extension: 150 x Ø23.5

Special features

• Carbide measuring faces
• Digital display with ON/PRESET, mm/inch, HOLD
• Data output: RB 6
• Suitable for blind-hole bores
• Conforms to DIN 863
• Includes setting ring and extension

FAQ

What measurement range does the instrument cover?
The measuring range is 30–40 mm; the M312.237.PN is optimised for internal bores within that span.

Is the device suitable for blind‑hole measurements?
Yes, the three‑point contact system and included extension make the M312.237.PN suitable for blind‑hole (sackloch) bores.

How is data exported from the instrument?
The instrument provides a data output via RB 6, enabling connection to compatible data collection systems.

What level of protection does the instrument offer in harsh environments?
Rated IP65, the unit resists dust ingress and low‑pressure water jets, permitting use close to machining processes.

Does the micrometer include calibration aids?
The delivery includes a setting ring (40 mm) and an extension for quick verification and setup.

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