50-63 mm Three-Point Internal Micrometer Digital Readout With Measuring Drum Scale, IP65 - Metav IndustryLine

High-precision internal measurement with a 50–63 mm range and 0.005 mm accuracy delivers reproducible results for blind-hole and internal-diameter inspection. Robust construction with IP65 protection and a digital RB 4.1 data interface supports traceable measurement workflows. Order the M312.239.M three-point internal micrometer directly via Metav Werkzeuge or ask the consultants for application advice.

M312.239.M — Three-point internal micrometer (50–63 mm, digital RB 4.1) by Metav IndustryLine

M312.239.M is a digital three-point internal micrometer intended for precise internal-diameter checks and blind-hole measurements in workshops and production environments.

• Three-point internal contact system
• Digital readout with RB 4.1 interface
• High accuracy 0.005 mm for reproducible results
• IP65 protection for harsh shop environments

Precision where reproducibility matters

The M312.239.M offers a 0.005 mm accuracy that meets demanding inspection tasks; this level of precision reduces rework and supports consistent process control. The instrument’s three-point contact and the measuring drum with scale produce stable centring in bores, so internal diameters are measured without time-consuming fixtures. Conformity to DIN 863 provides a recognised standard basis for quality documentation, and the hardened measuring faces ensure long-term dimensional stability under regular use.

Designed for straightforward shop-floor use

Durable mechanical design and a digital display with ON/OFF/SET and ABS/INC/UNIT buttons make routine checks fast and intuitive while maintaining traceability. The housing meets IP65 protection, which safeguards electronics from coolant splash and workshop dust, extending mean time between failures. At a compact length of 114 mm and a balanced weight of 3.5 kg, the tool is convenient to handle on assembly benches yet substantial enough to resist accidental deflection during measurement.

Connectivity and documentation for modern workflows

Equipped with a RB 4.1 data output, the device integrates into inspection routines that require logged measurements or connection to data-collection systems. Digital transfer reduces transcription errors and speeds up statistical process control. Where traceable data is needed, the instrument’s digital readout simplifies record keeping and supports quality procedures without additional third-party adapters.

Accessories and application scope that add value

Delivered complete with a setting ring and extension (150×Ø23.4), the micrometer is ready for blind-hole and standard internal checks upon receipt. The tool is suitable specifically for blind-hole bores and internal diameters within its 50–63 mm measuring range, and the matt-chrome plated scale and vernier improve legibility in bright shop lighting. These practical inclusions reduce setup time and make the instrument a reliable choice for repetitive inspection tasks.

Contact Metav Werkzeuge for an expert application consultation and to arrange supply of the Metav IndustryLine M312.239.M three-point internal micrometer with RB 4.1 data output

Technical data

• Article number: M312.239.M
• GTIN: 4054469162409
• Brand: Metav IndustryLine

Facts

• Measuring range: 50–63 mm
• Accuracy: 0.005 mm
• Length: 114 mm
• Weight: 3.5 kg
• Tariff number: 90173000

Special features

• IP 65 protection
• Digital display with ON/OFF/SET and ABS/INC/UNIT buttons
• Data output: RB 4.1
• Measuring drum with scale
• Hardened measuring faces
• Suitable for blind-hole measurements
• Includes setting ring and extension (150×Ø23.4)
• Norm: DIN 863
• Material: scale and vernier matt chrome plated

FAQ

What is the measuring range of this internal micrometer?
The M312.239.M covers the 50–63 mm range, making it suitable for small to medium internal diameters and blind-hole checks.

How accurate is the measurement provided by the instrument?
The three-point internal micrometer achieves 0.005 mm accuracy, which is suitable for high-precision inspection tasks in production and quality control.

Can measurement data be exported from the device?
Yes. The instrument features a RB 4.1 data output for direct digital transfer to data collection systems or inspection software.

Is the micrometer suitable for use in harsh workshop conditions?
The device is rated IP65, offering protection against dust and water jets, which supports reliable operation in challenging shop-floor environments.

What accessories are supplied with the micrometer?
Delivery includes a setting ring and an extension (150×Ø23.4) to facilitate blind-hole and extended-depth measurements.

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