6-8mm Digital Three-Point Internal Bore Gauge With RB6 Spindle, 0.001mm Resolution, Calibrated Display - Metav IndustryLine

Combining precise three-point centring with a high-resolution digital readout, this instrument speeds up internal inspections of blind holes while keeping measurements reproducible. Take advantage of the compact 6–8 mm range and RB 6 data output for seamless integration into inspection routines; order the Digital three-point internal micrometer directly via Metav Werkzeuge or ask our consultants if needed.

Digital three-point internal micrometer M312.210 — 6–8 mm, RB 6 data output (Metav IndustryLine)

The Digital three-point internal micrometer M312.210 is a compact, workshop-ready instrument for repeatable internal measurements, especially suited to blind-hole inspection in metalworking and precision engineering.

• Three-point centring for secure interior contact
• 6–8 mm measuring range for small bores
• 0.001 mm resolution for fine inspection
• RB 6 data output for digital integration

Accurate centring for blind holes and small bores

The three-point measuring principle provides uniform contact around the circumference of a bore, which improves repeatability in shallow or blind-hole situations. With a measuring range 6–8 mm, the instrument is tailored for small internal diameters where standard probes struggle to centre reliably. The combination of three-point measuring and robust contact geometry reduces measurement scatter and simplifies comparative checks on production parts, delivering consistent results in serial inspection and fixture testing.

Fast, clear digital readout and data output for integration

Equipped with a digital display featuring ON/OFF/SET, HOLD and mm/inch selection, the micrometer provides immediate numeric feedback and convenient unit switching for international workflows. The high resolution of 0.001 mm together with an indicated accuracy of ±0.004 mm makes the instrument suitable for tight tolerance checks at component level. The RB 6 data output enables direct transfer of readings to data-loggers or inspection software, reducing transcription errors and supporting traceable measurement protocols in the workshop.

Compact, robust design for everyday inspection tasks

Designed as a compact measuring tool, the micrometer’s low mass and short form factor make it easy to handle inside fixtures or confined engine components; the unit weight is approximately 0.7 kg and the overall length is 45 mm, which aids manoeuvrability in assembly and maintenance environments. Supplied without setting ring and without extension, the instrument remains simple to use for standard applications and is particularly effective for rapid pass/fail checks and quality-control spot measurements. As a Metav IndustryLine product, it reflects a practical balance of precision and durability for busy production floors.

Contact Metav Werkzeuge today for specification advice and to reserve the M312.210 with RB 6 output for your inspection processes — phone +49 2822 7131930 or email info@metav-werkzeuge.com

Technical Data

• Article number: M312.210
• GTIN: 4054469169071
• Manufacturer: Metav IndustryLine
• Category: Micrometers

Facts

• Measuring range: 6–8 mm
• Resolution: 0.001 mm
• Accuracy: ±0.004 mm
• Weight: 0.7 kg
• Length: 45 mm
• Tariff number: 90173000

Special features

• Three-point internal measuring principle
• Digital display with ON/OFF/SET, HOLD, mm/inch
• Data output: RB 6
• Suitable for blind-hole measurement
• Supplied without setting ring and without extension
• Digital instrument

FAQ

Is this instrument suitable for measuring blind holes?
Yes. The M312.210 is specifically suited to blind-hole measurement thanks to its three-point internal measuring principle, which ensures reliable centring in shallow bores.

What accuracy and resolution can be expected?
The instrument offers a resolution of 0.001 mm and an indicated accuracy of ±0.004 mm, making it appropriate for fine inspection tasks and production checks.

Which data interface is provided for measurement transfer?
Readings can be exported via the RB 6 data output; the M312.210’s electronic interface supports integration with common data-collection systems.

Can readings be taken in inches?
Yes. The digital readout includes an mm/inch function, allowing quick unit switching on the display.

Is the micrometer suitable for everyday workshop use?
Absolutely. The compact design and practical feature set of the M312.210 make it well suited for routine quality-control tasks in machining, assembly and maintenance environments.

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