2.5 mm Internal Measuring Micrometer With Carbide Faces, Setting Ring, Chrome Scale - Metav IndustryLine

Benefit from high-resolution measurement and carbide contact surfaces for reproducible internal diameters; the instrument includes a setting ring and is delivered in a transport case for protected storage. Order the M312.122 directly via Metav Werkzeuge or consult our specialists for specific application advice.

M312.122 internal micrometer (2.0–2.5 mm) – carbide measuring faces by Metav IndustryLine

The M312.122 is an analogue internal micrometer designed for precise measurement of small bores and blind holes in fine mechanical and workshop environments.

Analogue vernier with 0.001 mm resolution Carbide measuring faces for wear resistance Includes a 2.5 mm setting ring for calibration Delivered in a protective transport case

High-precision measurement for small bores

This internal micrometer is built for reproducible results in very small diameters. With a measurement range of 2.0–2.5 mm, the instrument falls into the Micro range — the class intended for extremely compact calipers used in watchmaking and micro components, where stiffness and short jaws reduce torsion. The analogue vernier offers a resolution of 0.001 mm and an accuracy of ±0.004 mm, providing reliable numerical certainty for quality control tasks. The combination of fine mechanical construction and clear graduation reduces interpretation errors and shortens inspection cycles.

Durable contact surfaces and setting ring for repeatability

Carbide (hardmetal) measuring faces ensure low wear and consistent contact geometry when assessing internal diameters over time. The carbide measuring faces are especially beneficial on abrasive or frequently inspected parts, as they preserve measurement integrity and lower lifecycle variation. A 2.5 mm setting ring is supplied, enabling quick verification and in-field adjustment of the instrument before batches or shifts, which supports process stability and traceable routines without complex calibration equipment.

Workshop-ready design and handling benefits

The scale and vernier are matt chrome-plated, improving legibility under varied lighting and resisting glare during repeated inspections. Delivered in a transport case, the micrometer can be stored safely between uses and protected during transit. Its compact construction and balanced weight make single-handed positioning in small bores straightforward; suitability for blind-hole measurement is explicitly provided, so the tool addresses typical internal inspection tasks in machining and assembly. The analogue mechanism is robust, simple to service and avoids dependency on batteries or electronics for dependable uptime.

For procurement or technical queries about the Metav IndustryLine M312.122, request a quotation or arrange a specification check with Metav Werkzeuge at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical Data

• Article number: M312.122
• GTIN: 4054469119380
• Category: Micrometers (internal)
• ECLASS: 21170335
• ETIM: EC003590
• Customs tariff number: 90173000

Core specifications

• Measurement range: 2.0–2.5 mm
• Resolution (vernier): 0.001 mm
• Accuracy: ±0.004 mm
• Weight: 1 kg
• Analogue: yes

Design & special features

• Carbide measuring faces
• Scale and vernier matt chrome-plated
• Setting ring included (2.5 mm)
• Suitable for blind-hole measurement
• Delivered in transport case

FAQ

How small a bore can this instrument measure?
The instrument measures internal diameters from 2.0 to 2.5 mm, making it suitable for very small bores within the Micro range classification.

What resolution and accuracy does the tool provide?
Resolution is 0.001 mm with an indicated accuracy of ±0.004 mm, values stated for the M312.122 internal micrometer (Metav IndustryLine).

Are the measuring faces durable for regular workshop use?
Yes, the M312.122 is fitted with carbide measuring faces, which are wear resistant and preserve contact geometry under frequent inspection cycles.

Is a setting standard supplied for verification?
A 2.5 mm setting ring is included for quick functional checks and zero verification before inspection runs.

Does the delivery include protective packaging?
The micrometer is supplied in a transport case, providing protection during storage and transit.

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