50–63 mm Three-Point Internal Measuring Gauge With Carbide Measuring Faces, Setting Ring, DIN 863 - Metav IndustryLine

Take advantage of the combination of three-point measurement, hard‑metal measuring faces and high repeatability for reliable bore inspection. Order the instrument directly via Metav Werkzeuge or consult the specialists for application advice.

Three-point internal micrometer M312.160 — inside micrometer with carbide faces, 50–63 mm

Three-point internal micrometer M312.160 designed for precise measurement of internal diameters and blind bores in workshops and inspection rooms

• Three-point contact for secure centring
• Carbide measuring faces for wear resistance
• Measuring range 50–63 mm for small bores
• Includes setting ring 62 for quick calibration

Consistent, measurable precision for bore inspection

The instrument delivers repeatable internal measurements thanks to its three-point contact geometry, which centres automatically in the bore and reduces tilting errors. With a reading of 0.005 mm and an indicated accuracy of ±0.005 mm, measurable tolerances for small-diameter bores can be controlled with confidence. The analogue design follows DIN 863, providing a familiar measuring routine for technicians and quality inspectors; the supplied setting ring 62 enables a straightforward reference adjustment before series inspections.

Robust contact surfaces and practical handling

The measuring faces are made from hard‑metal (carbide) to resist wear during repeated use in production and inspection environments, extending service life and preserving measurement integrity. The matt‑chrome scale and vernier improve legibility under workshop lighting while resisting glare. The compact footprint and precise contact geometry make the instrument particularly suitable for narrower bores and blind‑hole checks, where dependable centring and stable contact are essential for reproducible results.

Designed to reduce rework and speed up inspection routines

By combining centring reliability with hard-wearing contact faces and a quick reference setting, the device shortens set‑up times and reduces the risk of false rejects. Traceable measurement practice is supported by the instrument’s compliance with established standards, which simplifies documentation in quality control processes. For applications in maintenance, small series production or toolroom inspection, the micrometer provides a pragmatic balance of accuracy and robustness that helps to keep production running smoothly.

Discuss suitability for specific bore tasks with Metav Werkzeuge in Emmerich; technical advice and delivery coordination are available from the Metav team via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: M312.160
• GTIN: 4054469119670
• ETIM: EC003590
• eClass: 21170335
• Norm: DIN 863

Facts

• Measuring range: 50–63 mm
• Reading: 0.005 mm
• Indicated accuracy: ±0.005 mm
• Length: 114 mm
• Analogue instrument

Special features

• Carbide (hard‑metal) measuring faces
• Setting ring: 62
• Suitable for blind‑hole (sackloch) measurements
• Scale and vernier matt chrome‑plated
• Extensions: 150 x Ø23.4

FAQ

How is centring achieved with this inside micrometer?
Centring is achieved by the three‑point contact geometry of the instrument, which self‑aligns in the bore to reduce tilting and produce consistent readings with the Metav IndustryLine three‑point internal micrometer (M312.160).

Can blind holes be measured with this instrument?
Yes, the design is suitable for blind‑hole measurements and the product specification explicitly states compatibility with blind bores.

What is the smallest increment visible on the scale?
The vernier provides a reading of 0.005 mm, ensuring fine resolution for close‑tolerance checks on small diameters.

Is the instrument robust enough for regular workshop use?
The hard‑metal measuring faces and matt‑chrome scale are selected to withstand frequent handling and maintain measurement integrity in workshop environments.

Does the micrometer require a reference ring for calibration?
A setting ring 62 is specified and included for quick reference adjustment before inspections; routine calibration should follow the organisation’s quality procedures.

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