300-325mm Three-Point Internal Micrometer Digital, 0.001mm Resolution, Hardened Measuring Faces, Supplied in Case - Metav IndustryLine

Take advantage of precise digital measurement, robust hardened measuring faces and a long 300–325 mm range to secure consistent internal diameters and faster setup in production. Order the three-point internal micrometer directly via Metav Werkzeuge or ask our consultants if needed.

Three-point internal micrometer M312.266 — Digital internal micrometer, 300–325 mm, Metav IndustryLine

A three-point internal micrometer M312.266 for accurate large-bore measurements in toolmaking, fixture construction and component inspection

• Digital display with mm/inch, ABS and HOLD
• Measuring range 300–325 mm
• Hardened measuring faces for wear resistance
• RB 4 data output for digital traceability

Confident internal measurements with measurable precision

The three-point measuring principle ensures stable contact across the bore and, combined with a measuring range 300–325 mm, provides reproducible readings for medium-to-large internal diameters. The instrument offers accuracy 0.012 mm and a fine resolution 0.001 mm, values that translate into fewer reworks and reliable quality control steps. The substantial measuring depth 140 mm permits measurement of recessed bores and stepped components without auxiliary fixtures, helping to standardise inspection routines on shop floors and in quality labs.

Built for repeatability and straightforward handling

Robust construction and hardened measuring faces reduce wear under continuous use, extending the tool’s service life in busy production environments. The digital display includes ON/0-, mm/inch-, ABS-, PRESET- and HOLD-touches to speed up setup and avoid manual transcription errors. Supplied without a setting ring, the instrument integrates into existing calibration procedures and is suited to fixed inspection benches or portable verification tasks. The device’s mass (approx. 5 kg) adds stability during measurement, improving repeatability for heavier or awkward components.

Streamlined data transfer and procurement-friendly details

Equipped with RB 4 data output, the micrometer transfers measurements to SPC or inspection software for traceable records and Process Control integration. The robust specification supports documentation requirements across manufacturing and inspection chains, and the included classification details simplify ordering and customs handling. The tool is therefore well suited to workshops and production lines that require both hands‑on reliability and digital traceability to meet modern quality standards.

Choose the Metav IndustryLine three-point internal micrometer for dependable large-bore measurement—contact Metav Werkzeuge for technical advice or to arrange supply.

Technical data

• SKU: M312.266
• GTIN: 4054469159034
• Eclass: 21170335
• ETIM: EC003590
• Tariff number: 90173000

Facts

• Measuring range: 300–325 mm
• Accuracy: 0.012 mm
• Resolution (reading): 0.001 mm
• Measuring depth: 140 mm
• Weight: 5 kg

Special features

• Digital display with ON/0-, mm/inch-, ABS, PRESET and HOLD
• RB 4 data output for digital measurement transfer
• Hardened measuring faces for wear resistance
• Supplied without setting ring

FAQ

What measurement range does this micrometer cover?
The three-point internal micrometer covers a 300–325 mm measuring range suitable for medium-to-large bores in fixtures and housings.

What resolution and accuracy can be expected?
Resolution is 0.001 mm and the stated accuracy is 0.012 mm, providing the precision required for routine production checks and component inspection with the Metav IndustryLine micrometer (M312.266).

Is the instrument ready for digital data capture?
Yes. The device features an RB 4 data output, enabling direct transfer of measured values into SPC or inspection systems.

Are measuring faces treated to resist wear?
The micrometer is supplied with hardened measuring faces, which improves durability and maintains measurement consistency under regular use.

Is a setting ring included for calibration?
Delivery is without a setting ring; calibration or presetting should be performed with existing workplace standards or with a separately ordered setting ring.

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