6–12mm Three-Point Internal Measuring Set With Adjustment Rings 6+8+10mm, DIN 863, In Case - Metav IndustryLine

Reliable blind‑hole inspection is achieved by combining a 6–12 mm measuring range, 0.004 mm accuracy and hardened measuring faces in a compact three‑point design; order the set directly via Metav Werkzeuge or consult our specialists for application advice.

Three‑point internal micrometer set M312.174 — three‑point contact for blind‑hole measurement, 6–12 mm / 0.004 mm

A three‑point internal micrometer set designed for precise diameter measurement of blind bores in toolmaking, toolroom inspection and quality control applications.

• Three‑point contact for blind bores
• Measuring range 6–12 mm
• Accuracy 0.004 mm
• Matt‑chrome scale and vernier

Precise blind‑hole measurement with three‑point contact

The three‑point design provides stable, concentric contact inside blind bores, converting small positional variations into a reliable diameter value; this makes the set ideal for repeatable checks in tight or inaccessible bores. With a 6–12 mm range and 0.004 mm declared accuracy, the instrument is suited for fine mechanical work where measurable tolerances must be demonstrated. The included setting rings (6, 8, 10 mm) permit quick calibration of the measuring head before use, reducing setup time and ensuring consistent results across repetitive measurements.

Durable construction that suits the workshop environment

Built for routine use, the set pairs a mechanically precise analogue drive with a matt‑chrome scale and vernier, offering tactile feedback and visual clarity without reliance on electronics. Hardened measuring faces protect the contact surfaces against premature wear, preserving long‑term measurement integrity. Conformity to DIN 863 indicates that the instruments meet established workshop standards, while the compact three‑piece configuration keeps handling and storage straightforward for bench‑level inspection tasks.

Integrating the set into quality workflows

Using a dedicated internal micrometer set like this reduces rework by providing fast, trustworthy pass/fail checks during component inspection. The analogue mechanism delivers a direct measurement principle that is easy to verify against gauge blocks or setting rings, making traceability straightforward in quality documentation. The compact design and clear mechanical readout support both small series production and maintenance checks, streamlining inspection throughput without complex data systems. Metav’s role as a precision partner underscores the practical benefit: high‑accuracy tools made accessible for everyday workshop use.

For application support or to arrange supply from Emmerich, contact Metav Werkzeuge for tailored advice and rapid delivery: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• SKU: M312.174
• GTIN: 4054469119816
• Category: Measuring instruments / Micrometers
• Manufacturer: Metav IndustryLine

Facts

• Measuring range: 6–12 mm
• Accuracy: 0.004 mm
• Pieces per set: 3
• Setting rings: 6 mm, 8 mm, 10 mm
• Weight: 1 kg
• Tariff number: 90173000

Special features

• Three‑point contact for blind‑hole measurement
• Matt‑chrome scale and vernier
• Hardened measuring faces
• Analogue mechanical micrometer design
• Complies with DIN 863
• Extensions: 100×Ø5.7 (as supplied)

FAQ

What is the measuring range and accuracy of the set?
The three‑point internal micrometer set M312.174 measures from 6 to 12 mm with a declared accuracy of 0.004 mm, making it suitable for fine mechanical inspection tasks.

Is this instrument suitable for blind‑hole measurements?
Yes — the three‑point contact principle is specifically intended for reliable diameter measurement inside blind bores and is included for that application in the M312.174 set.

What accessories are supplied with the set?
The set contains three measuring heads (three‑piece set) and the setting rings 6, 8 and 10 mm for quick calibration of the measuring head prior to measurement.

Are the measuring faces hardened and what is the scale finish?
The measuring faces are hardened for wear resistance and the scale and vernier are finished in matt chrome for good legibility and robust workshop use.

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