250-275mm Three-Point Internal Micrometer Digital With ON/Zero mm/inch ABS Preset Hold, Case - Metav IndustryLine

Take advantage of precise internal measurement through the combination of a three‑point measuring system, a digital readout with mm/inch and ABS functions, and a fine resolution of 0.001 mm to ensure repeatable, documentable bore checks. Order the instrument directly via Metav Werkzeuge or consult our product specialists for application advice.

Three‑point internal micrometer M312.262 — digital, 250–275 mm (Metav IndustryLine)

The three‑point internal micrometer M312.262 is a digital measuring instrument designed for accurate internal diameter measurement in machining, toolmaking and quality inspection applications.

• Digital display with ON/0, mm/inch, ABS
• Measuring range 250–275 mm
• Resolution 0.001 mm, accuracy 0.009 mm

Repeatable centring for reliable bore measurement

The three‑point contact system delivers consistent centring inside bores, reducing variation from off‑axis probing and enabling reproducible results across multiple measurements. This mechanical design stabilises the contact geometry so that each reading is taken from a defined datum, which is particularly valuable when checking seats, bushings and stepped bores. The robust contact arrangement improves process stability and lowers scrap rates by making borderline parts easier to classify.

Digital readout and data capture improve inspection throughput

Equipped with a digital display offering ON/0, mm/inch switching, ABS, PRESET and HOLD functions, the instrument speeds up routine checks and reduces transcription errors. The resolution of 0.001 mm combined with a stated accuracy of 0.009 mm supports tight tolerance work and gives clear, actionable values for statistical process control. The unit provides a data output (RB 4) for integration into measurement data collection systems, simplifying documentation and traceability in production and audit processes.

Practical dimensions and workshop suitability

With a measuring range of 250–275 mm and a measuring depth of 140 mm, the tool covers medium‑sized internal diameters common in assemblies and housings while remaining manageable at the bench. The instrument’s mass and construction lend stable handling during measurement, helping to avoid measurement disturbance caused by operator force. Note that delivery is without setting ring; this allows selection of a calibration ring suited to the specific nominal diameters in use and avoids unnecessary inclusions for bespoke measurement routines.

For tailored advice on integrating the Metav IndustryLine three‑point internal micrometer into quality control routines, contact Metav Werkzeuge and discuss application, interfaces and calibration options with our specialists.

Technical data

• Article number: M312.262
• GTIN: 4054469120041
• SKU: M312.262

Core specifications

• Measuring range: 250–275 mm
• Measuring depth: 140 mm
• Resolution: 0.001 mm
• Accuracy: 0.009 mm
• Weight: 4.9 kg

Special features

• Digital display with ON/0, mm/inch, ABS, PRESET, HOLD
• Data output: RB 4
• Measuring faces: included
• Delivery: without setting ring
• Category: internal micrometer (three‑point), digital

FAQ

How does the three‑point contact improve measurement repeatability?
The three‑point contact ensures the measuring anvils centre within the bore, so the three‑point internal micrometer M312.262 registers diameters from a defined geometry and reduces variation caused by probe tilt.

What level of precision can be expected from this instrument?
The instrument offers a resolution of 0.001 mm and a declared accuracy of 0.009 mm, making the device suitable for fine internal measurements and quality control tasks where sub‑hundredth‑millimetre consistency is required.

Can measurement results be transferred to a PC or inspection system?
Yes. The micrometer provides a data output (RB 4) to support digital data capture and downstream documentation in inspection reports or SPC systems.

Is a calibration or setting ring supplied with the micrometer?
Delivery is without setting ring; this permits customers to select or supply a setting/calibration ring that matches their nominal diameters and tolerances.

For which applications is the 250–275 mm measuring range most suitable?
The 250–275 mm range and 140 mm measuring depth suit medium‑sized bores found in housings, gearboxes and larger tool components where centred, repeatable internal measurements are required.

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