150-175mm Three-Point Internal Micrometer Digital, For Blind-Hole Measurement, IP65 Protection - Metav IndustryLine

Take advantage of the combination of precise three-point contact, a clear digital interface and traceable RB 4 output for reliable inspection of blind holes in medium-size components. Order the instrument directly via Metav Werkzeuge or contact our consultants for application advice.

M312.258.S — Three-point internal micrometer, digital, 150–175 mm (Metav IndustryLine)

The M312.258.S is a digital three-point internal micrometer engineered for accurate measurement of blind bores in workshop and inspection environments, offering a practical range for standard medium‑sized components.

• Digital display with mm/inch, ABS and hold
• Measurement range 150–175 mm
• Three-point contact for blind-hole measurement
• RB 4 data output for traceable recording

Precise internal measurement of blind bores

The instrument uses a three-point contact geometry that centres automatically within a bore to deliver repeatable interior readings. With a measurement span of 150–175 mm, it falls into the standard range for workshop metrology, providing a tested balance between reach and stiffness for fixtures, housings and medium assemblies. The specified 0.007 mm accuracy ensures that dimensional deviations are detected reliably, while the measuring depth 140 mm allows access into substantial blind bores without sacrificing stability. This combination reduces rework and shortens inspection cycles by delivering clear pass/fail orientation for production control.

Efficient digital operation and traceable results

Equipped with a digital display and function keys (ON/0-, mm/inch, ABS, PRESET and HOLD), the device streamlines readings and reduces transcription errors. The integrated RB 4 data output enables direct transfer of measurements to data acquisition systems for documentation and statistical process control, supporting traceability and auditability of inspection records. The preset and absolute modes simplify repeated sampling tasks, while the hold function freezes unstable readings for improved operator handling – a practical advantage in busy shopfloors where throughput and documentation are equally important.

Built for workshop use and dependable handling

The construction features hardened measuring faces for wear resistance and longevity in daily metrology routines; the instrument’s mass of 2.8 kg gives it a reassuring feel while supporting stable contact in deeper bores. Delivery omits the setting ring, so calibration accessories should be arranged if ring-based zeroing is required. The tool is particularly suited to blind‑hole tasks and bench inspection stations where a robust, repeatable internal measuring method is required. Manufactured under the Metav IndustryLine umbrella, the device integrates practical ergonomics with measurement integrity to support quality assurance across production and maintenance operations.

Contact Metav Werkzeuge for tailored application advice and availability of the Metav IndustryLine three‑point internal micrometer with RB 4 output and digital functions

Technical data

• Article number: M312.258.S
• GTIN: 4054469158976
• Manufacturer: Metav IndustryLine

Core measurements

• Measurement range: 150–175 mm
• Measuring depth: 140 mm
• Accuracy: 0.007 mm
• Weight: 2.8 kg
• Customs tariff (CN): 90173000

Special features

• Digital display with ON/0-, mm/inch, ABS, PRESET and HOLD
• RB 4 data output
• Three-point internal measurement for blind holes
• Hardened measuring faces
• Supplied without setting ring
• Suitable for medium workshop and inspection tasks

FAQ

What is the typical application for this instrument?
The M312.258.S three-point internal micrometer is intended for precise measurement of blind bores and internal diameters in medium‑sized components where repeatability and centralised contact are required.

How accurate are the measurements?
The instrument achieves an accuracy of 0.007 mm, suitable for quality control tasks that demand fine resolution across the 150–175 mm measurement span.

Does the device output measurement data to a PC?
Yes, the tool features an RB 4 data output for connection to data collection systems, enabling traceable recording and integration into inspection workflows.

Are calibration accessories included?
The device is supplied without a setting ring; zeroing or verification accessories should be provided separately according to the workshop’s calibration procedures.

What display and modes are available on the unit?
The digital readout includes ON/0-, mm/inch switching, ABS and PRESET modes plus a HOLD function to capture transient readings.

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