20–25mm Three-Point Internal Micrometer 0.001mm Resolution With Setting Ring And Extension, In Case - Metav IndustryLine

Take advantage of the combination of 1 µm resolution, three‑point internal measurement and a supplied 25 mm setting ring with extension for reliable inspection of blind bores; order directly via Metav Werkzeuge or consult its specialists for integration into existing QA routines.

Three‑point internal micrometer, 20–25 mm × 0.001 mm (Metav IndustryLine)

A Three‑point internal micrometer, 20–25 mm × 0.001 mm designed for precise measurement of blind-hole bores in production and inspection environments

• Three‑point measurement for blind-hole bores
• 0.001 mm (1 µm) resolution
• Accuracy ±0.005 mm for reliable QA
• Matt chrome‑plated scale and vernier

High-resolution measuring for tight tolerances

The instrument delivers a 0.001 mm (1 µm) resolution, enabling assessments that meet tight tolerance requirements in toolmaking and quality control. With a stated accuracy of ±0.005 mm, the three‑point contact system provides repeatable readings when checking blind holes where conventional gauges cannot reach. The fine graduations and clear vernier markings, supplied on a matt chrome‑plated scale, ensure legible, rapid readings even under bright workshop lighting. This combination of resolution and stability supports fast decision-making in production.

Robust contact design for repeatable results

A three‑point measuring arrangement centres the measuring contacts automatically inside the bore, reducing alignment errors and offering stable seating in blind-hole bores. The unit features hardened measuring faces, which resist wear and preserve measurement integrity over repeated cycles. The measuring frame and vernier are finished with a durable, matt chrome coating that minimises glare and mechanical wear. Together, these attributes make the instrument a practical choice for routine inspections where repeatability is essential.

Ready for in-process use and calibration control

The micrometer is supplied with a 25 mm setting ring to establish a verified reference quickly and an extension (152.4 × Ø15.8 mm) for deeper or recessed bores, extending the instrument’s usable reach without compromising accuracy. The setting ring allows simple on-site verification of the instrument’s zero point before critical runs, supporting traceable measurement routines in workshop and shop‑floor environments. Lightweight handling and ergonomic control help maintain consistent measuring force for reliable results.

Where this instrument adds value

Ideal for inspection of blind bores in fixtures, housings and assembled components, the three‑point micrometer is particularly useful in maintenance workshops and production lines that require fast yet accurate internal checks. The design reduces setup time compared with certain comparative measuring methods and fits neatly into established calibration and quality assurance cycles. Combined with Metav’s supply and technical advice, the instrument supports a pragmatic approach to improving measurement certainty across the shop floor.

Contact Metav Werkzeuge to discuss how the Metav IndustryLine three‑point internal micrometer (M312.435) can be integrated into inspection plans or to request a tailored quotation from Metav Werkzeuge

Technical data

• Article number: M312.435
• GTIN: 4054469182179
• Manufacturer: Metav IndustryLine

Facts

• Measuring range: 20–25 mm
• Resolution: 0.001 mm (1 µm)
• Accuracy: ±0.005 mm
• Weight: 1.2 kg

Special features

• Intended for blind-hole bores
• Hardened measuring faces
• Scale and vernier matt chrome‑plated
• Includes setting ring Ø25 mm
• Extension: 152.4 x Ø15.8 mm

FAQ

What is the measuring range and resolution of the instrument?
The three‑point internal micrometer covers 20–25 mm with a 0.001 mm (1 µm) resolution and a stated accuracy of ±0.005 mm, suitable for fine internal inspections.

How does the three‑point principle help with blind-hole measurement?
The three‑point contact system centres automatically in the bore, reducing misalignment and providing stable seating for repeatable readings with the Metav IndustryLine three‑point internal micrometer (M312.435).

Are the measuring faces durable for regular workshop use?
Yes, the instrument is fitted with hardened measuring faces, which resist wear and help maintain measurement consistency across repeated checks.

What accessories are supplied for calibration and deeper bores?
The instrument includes a 25 mm setting ring for quick reference checks and an extension (152.4 × Ø15.8 mm) to reach deeper or recessed blind holes.

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