16–20 mm Three-Point Internal Micrometer With Carbide Measuring Faces, Adjustment Ring, Supplied In Case - Metav IndustryLine

Benefit from a compact, high-precision instrument that combines a 16–20 mm measuring range, carbide measuring faces and a dedicated setting ring for reproducible internal checks; order directly via Metav Werkzeuge or consult our specialists for application advice.

Three-point inside micrometer 16–20 mm — carbide faces, setting ring | Metav IndustryLine

The Three-point inside micrometer 16–20 mm is a precision tool for internal diameter measurement in fine mechanical and workshop environments, optimised for repeatable bore checks and blind‑hole applications

• Carbide measuring faces for wear resistance
• High precision ±0.005 mm accuracy
• Compact 16–20 mm measuring range
• Delivered with setting ring and protective case

Precision where it counts for internal bores

The instrument uses a three-point measuring mechanism that centres automatically in a bore, producing stable, repeatable contact with minimal operator influence. This design, combined with carbide measuring faces, reduces wear and preserves measurement integrity over many cycles, which is crucial when tolerance margins are tight. The specified ±0.005 mm accuracy makes the gauge suitable for metrology tasks that demand finer-than-standard control, while compliance with DIN 863 ensures compatibility with established workshop practices and inspection protocols.

Designed for reliable blind‑hole and internal measurements

A dedicated setting ring is included to verify and adjust the gauge at the reference diameter, simplifying zeroing before series checks. The geometry of the three contact points permits measurements in shallow and blind‑hole bores where conventional two‑point probes struggle to centre. As an analogue instrument with a matt finish on the scale and vernier, the device offers tactile feedback and quick visual readout, making it effective for both bench inspection and in‑process checks where digital readouts are not required.

Workshop durability and practical handling

The scale and vernier are matt‑chrome plated for reduced reflection and improved legibility under workshop lighting, while the carbide faces withstand abrasive conditions typical in production environments. The gauge is supplied in a protective case for safe transport and storage, and it accepts the listed compatible extensions for extended reach tasks. Together, these features aid efficient measurement cycles and lower the likelihood of rework, supporting a smoother production flow and predictable quality control in small‑part manufacturing.

For tailored measurement advice or a supply review from Metav Werkzeuge — including information on setting rings, compatible extensions and delivery options from our Emmerich facility — contact our consultants to discuss the application in detail.

Technical data

• Article number: M312.134
• GTIN/EAN: 4054469119472
• EClass: 21170335
• ETIM: EC003590
• Standard: DIN 863
• Category: Micrometers

Dimensions & accuracy

• Measuring range: 16–20 mm
• Accuracy / resolution: 0.005 mm
• Setting ring size: 16 mm
• Length: 80 mm

Materials & features

• Scale and vernier: matt‑chrome plated
• Measuring faces: carbide
• Analogue instrument with mechanical vernier
• Suitable for blind‑hole bores
• Delivered with setting ring and protective case
• Compatible extensions: 150×Ø11.7

FAQ

How accurate is the three-point inside micrometer?
The instrument achieves an accuracy of 0.005 mm, making the Three-point inside micrometer 16–20 mm suitable for high‑precision internal diameter checks.

Can it measure blind holes?
Yes — the three‑point contact geometry is designed to perform reliable checks in blind‑hole bores, and the gauge is specified for that application.

Is a calibration standard supplied?
A setting ring (16 mm) is included to verify zeroing; for formal calibration services please contact Metav Werkzeuge for options.

What materials are the measuring faces made from?
The measuring faces are made of carbide, selected for wear resistance in workshop and production environments.

Does the product include storage or transport protection?
The gauge is supplied in a protective case for transport and safe storage and ships with the setting ring and compatibility for the listed extensions.

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