30-40mm Three-Point Internal Micrometer Messtrommel Scale, IP65, Digital Readout ABS/INC/UNIT, Case - Metav IndustryLine

Take advantage of precise three‑point internal measurement, robust shop‑floor protection and digital data output for reliable bore inspection; the tool’s 30–40 mm measuring range and 0.005 mm accuracy ensure reproducible results. Order the instrument directly via Metav Werkzeuge or consult the Metav team for application advice.

M312.237.M — Three‑point internal micrometer, digital, IP65 (Metav IndustryLine)

The M312.237.M is a digital three‑point internal micrometer designed for precise measurement of blind and through bores in workshop and inspection environments.

• Digital display with ABS/INC/UNIT functions
• Measuring range 30–40 mm with 0.005 mm accuracy
• Carbide measuring faces for wear resistance
• IP65 protection and robust drum scale

Precise centring and repeatable readings for bore inspection

The three‑point contact system delivers centred measuring in bores and is particularly suited to blind‑hole inspection, giving a stable reference across the measured diameter. With a measuring range of 30–40 mm and an indicated accuracy of 0.005 mm, the instrument supports fine tolerance checks typical in component inspection and quality control. The integrated drum scale provides a quick visual check while the electronic readout offers exact numerical values, combining classic mechanical reliability with modern digital precision.

Built to withstand workshop conditions and everyday use

Engineered for routine use, the gauge features carbide measuring faces that resist wear and hold form over prolonged cycles, while a matt‑chrome scale and vernier improve legibility under workshop lighting. The unit is rated IP65, permitting use in environments where coolant mist or dust are present without compromising the measuring mechanism. Delivered complete with a setting ring and extension, and supplied in a transport case for secure storage, the tool balances robustness with practical handling for production and toolroom teams.

Traceable results and efficient data handling for quality processes

A clear digital display with ON/OFF/SET and ABS/INC/UNIT controls simplifies switching between measurement modes and reference points, reducing operator errors. The integrated data output RB 4.1 enables direct transfer of readings to data capture systems or SPC software, speeding documentation and improving traceability within quality workflows. Conformity to DIN 863 underlines the instrument’s suitability for routine inspection tasks where standardised measuring practice is required.

For specification checks, ordering or application guidance, contact Metav Werkzeuge in Emmerich — Metav’s technical advisers will help select the right measurement solution and arrange delivery.

Technical data

• Article number: M312.237.M
• GTIN: 4054469162386
• Manufacturer: Metav IndustryLine
• Standard: DIN 863
• Category: Messschrauben

Facts

• Measuring range: 30–40 mm
• Resolution / reading: 0.005 mm
• Accuracy: 0.005 mm
• Length: 97 mm
• Weight: 2.5 kg

Special features

• Digital display with ON/OFF/SET and ABS/INC/UNIT buttons
• Data output: RB 4.1
• IP65 protection
• Carbide (HM) measuring faces
• Drum with scale (messtrommel mit skalierung)
• Scale and vernier matt chrome plated
• Supplied with setting ring and extension
• Delivered in protective case
• Suitable for blind‑hole (sackloch) measurements

FAQ

How does the three‑point system improve measurement in blind bores?
The three‑point contact of the M312.237.M centres automatically in the bore, reducing eccentricity and delivering repeatable diameters even in blind‑hole conditions where conventional two‑point devices can tilt.

Can the digital readings be exported to a quality system?
Yes. The micrometer provides a data output (RB 4.1) for direct transfer of readings to SPC or measurement software, facilitating documentation and process control.

Are the measuring faces durable for production use?
The measuring faces are made from carbide, providing high wear resistance and long service life under regular shop‑floor inspection cycles.

Is the instrument protected against coolant and dust?
The device is rated IP65, which allows operation in environments with dust and splashing liquids typical of machining workplaces, preserving measurement integrity.

What accessories are included for setup and deep bores?
The micrometer is supplied with a setting ring and an extension, enabling immediate calibration and extended reach for recessed or deep bores.

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