8–10mm Three-Point Internal Micrometer 0.001mm With Setting Ring And Extension, In Case - Metav IndustryLine

Take advantage of precise three‑point centring and a 0.001 mm readout together with a compact extension set to inspect blind bores reliably; the instrument’s repeatable accuracy of ±0.004 mm reduces scrap and rework in component production. Order the three‑point internal micrometer directly via Metav Werkzeuge or contact their consultants for application advice.

M312.431 — Three‑point internal micrometer (8–10 mm, 0.001 mm) by Metav IndustryLine

The M312.431 is a three‑point internal micrometer designed for precise measurement of blind bores and small internal diameters in the 8–10 mm range.

• Three‑point contact for secure centring
• 8–10 mm range with 0.001 mm readout
• Accuracy ±0.004 mm for consistent results
• Supplied in a protective case with extension

Accurate centring for dependable bore inspection

The three‑contact measuring head provides a stable, concentric contact with internal surfaces; the three‑point contact geometry minimises eccentricity and delivers a repeatable measurement even in shallow or slightly tapered bores. With a 0.001 mm resolution and a stated reproducibility of ±0.004 mm, this instrument supports tight tolerance control in small components and quality checks without the need for complex set‑ups. The fine readout allows detection of minute deviations that would otherwise lead to component rejection or costly rework.

Robust construction and workshop practicality

Scale and vernier are matt chrome‑plated, combining corrosion resistance with low glare for straightforward reading under workshop lighting. The supplied setting ring (8 mm) and the extension rod (101.6 × Ø5.8 mm) extend the functional reach while keeping alignment intact, so even hard‑to‑reach blind holes can be measured reliably. At approximately 0.6 kg, the instrument balances solidity with manageable handling; the protective case ensures safe storage and transport between inspection benches and production cells, preserving calibration and head geometry.

Purpose‑built for production and inspection environments

Designed for routine shop‑floor metrology, the instrument is particularly suitable for checking blind bores in assemblies, small housings and precision turned parts. The three‑point head expands to contact the bore uniformly, meaning fewer measurement iterations and faster decision cycles in incoming inspection or in‑process control. Traceable identification (GTIN provided) and the compact case make it simple to integrate the tool into a controlled inspection workflow, supporting stable quality outcomes across batches.

Contact Metav Werkzeuge for tailored advice and stock availability of the Metav IndustryLine three‑point internal micrometer M312.431 — specialists in precision tools and workshop supplies from Emmerich to your bench

Technical data

• Article number: M312.431
• GTIN: 4054469182131
• Manufacturer: Metav IndustryLine

Core dimensions & tolerances

• Measurement range: 8–10 mm
• Resolution / reading: 0.001 mm
• Stated accuracy / reproducibility: ±0.004 mm
• Weight: 0.6 kg

Materials & special features

• Scale and vernier: matt chrome‑plated
• Setting ring: 8 mm
• Extension rod: 101.6 × Ø5.8 mm
• Supplied in protective case
• Suitable for blind‑hole measurements

FAQ

How does the three‑point head improve measurement of blind bores?
The three‑point contact in the M312.431 centres itself within the bore and distributes contact evenly, reducing eccentricity and giving a more reliable internal diameter measurement than single‑point probes.

Is the instrument suitable for very shallow blind holes?
Yes. The combination of the three‑point head and the included extension allows the M312.431 to reach and measure shallow blind bores while maintaining concentric contact.

What level of repeatability can be expected in workshop conditions?
Repeatability around ±0.004 mm is specified for this micrometer; stable handling, correct seating and the use of the setting ring help achieve that performance consistently.

Does the supply include protective storage and accessories?
The M312.431 is supplied in a protective case and includes the setting ring and extension rod for practical use and safe transport.

Can this instrument replace small bore gauges in incoming inspection?
For the 8–10 mm range, the three‑point internal micrometer offers a compact, precise alternative for production and inspection tasks where direct traceable readings are required.

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