40–50mm Digital Three-Point Internal Measuring Device Carbide Measuring Faces, RB6, No Setting Ring - Metav IndustryLine

The compact digital three-point internal micrometer combines 0.001 mm resolution, carbide measuring faces and an accuracy of ±0.005 mm, making it a precise, workshop-ready solution for small-bore and blind‑hole measurement; order the M312.218 directly via Metav Werkzeuge or consult our specialists if further advice is required.

M312.218 — Digital three-point internal micrometer (40–50 mm) by Metav IndustryLine

M312.218 is a digital three-point internal micrometer designed for precise measurement of bores and blind holes in the 40–50 mm range, suitable for fine mechanical and workshop inspection tasks.

• Digital display 0.001 mm resolution
• Carbide measuring faces for durability
• Accurate to ±0.005 mm
• Suitable for blind-hole measurement

Precision where small tolerances matter

The M312.218 delivers industry-grade measurement certainty by combining a high-resolution digital readout with robust measuring tips. The 0.001 mm resolution display and specified ±0.005 mm accuracy ensure repeatable results for small bore inspections, reducing downstream rework and scrap. The three-point measuring principle provides stable contact around the circumference, converting radial deviations into reliable readings — an efficient solution where consistent concentricity and roundness assessment are required.

Simple operation and compatible data output

Operation is straightforward: the instrument includes ON/OFF/SET, HOLD and mm/inch functions on the digital display for quick switching between units and temporary value retention. The device is supplied with an RB6 data interface for connection to inspection systems or data loggers, enabling traceable measurement records and easy integration into quality-control workflows. This combination of user-friendly controls and data connectivity supports efficient batch inspection without unnecessary complexity.

Built for everyday workshop use

Measuring faces are manufactured from carbide, improving wear resistance and maintaining reference geometry even under frequent contact with hard surfaces. The design omits additional extensions and a setting ring, keeping the tool compact and optimised for access into blind holes and confined geometries. With a measured weight of 2.4 kg, the instrument balances solidity with manoeuvrability, suitable for bench work and mobile inspection setups where robust handling is expected.

For specialist advice or to request calibrated delivery options for Metav IndustryLine tools, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930 — our consultants will recommend the right configuration for inspection routines and traceability requirements

Technical Data

• Article number: M312.218
• GTIN: 4054469169156
• Category: Micrometer (three-point internal)
• Brand: Metav IndustryLine

Facts

• Measuring range: 40–50 mm
• Resolution (display): 0.001 mm
• Accuracy: ±0.005 mm
• Weight: 2.4 kg
• Customs tariff number: 90173000

Special features

• Carbide measuring faces (HM)
• Digital display with ON/OFF/SET, HOLD and mm/inch
• RB6 data output
• No setting ring supplied
• No extension supplied
• Suitable for blind‑hole measurement

FAQ

What measurement range does this instrument cover?
The instrument measures internal diameters from 40 to 50 mm; the M312.218 is optimised for that range.

How precise is the digital readout?
The display resolution is 0.001 mm and the specified accuracy is ±0.005 mm for consistent results with the M312.218.

Are the measuring faces wear resistant?
Yes, the measuring faces are made of carbide, ensuring long service life and stable reference geometry under normal workshop use.

Can measurement data be exported to inspection software?
Yes, the device features an RB6 data interface for connection to data loggers and inspection systems.

Is the instrument suitable for blind‑hole measurements?
The design and contact geometry are specifically suitable for blind‑hole measurement tasks.

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