12-16mm Three-Point Internal Measuring Gauge With Carbide Measuring Faces, Adjustable Ring, DIN 863, Supplied In Case - Metav IndustryLine

Benefit from 0.005 mm accuracy and tungsten carbide measuring faces for reproducible internal measurements; combine precise three‑point centring with a dedicated setting ring for reliable blind‑hole inspection — order the M312.133 three‑point internal micrometer directly via Metav Werkzeuge or consult our specialists for application advice.

M312.133 Three‑point internal micrometer — 12–16 mm, carbide faces (Metav IndustryLine)

The M312.133 is a three‑point internal micrometer for fine bore measurement in the 12–16 mm range, optimised for blind‑hole and confined‑space inspection.

• Three‑point internal micrometer 12–16 mm range
• Tungsten carbide measuring faces
• Accuracy 0.005 mm per DIN 863
• Suitable for blind‑hole measurements

Precision that removes doubt in small bores

The instrument offers a measuring range of 12–16 mm with a guaranteed accuracy of 0.005 mm, which places it in the high‑precision class for mechanical internal measuring tools. The three‑point measuring system produces automatic centring in bores, reducing operator error and improving repeatability compared with two‑point gauges. The construction follows DIN 863, providing an internationally recognisable baseline for tolerance and conformity; this makes the device suitable for quality control tasks where traceable, comparable results are required. The analogue indicator design ensures instant visual feedback without dependence on batteries or digital electronics.

Robust contact geometry for confined and blind holes

Equipped with tungsten carbide measuring faces, the gauge resists wear and provides a stable measuring surface over prolonged use. The supplied setting ring (12 mm) allows quick verification and zeroing before a measurement series, which speeds up routine checks and reduces setup time on the shop floor. The three‑point head is explicitly suited to blind‑hole measurement, enabling reliable readings where depth and access are limited. The matt chrome‑plated scale and vernier improve legibility and resist glare under workshop lighting, supporting fast, confident readings during production inspections.

Designed for workshop robustness and straightforward use

The device combines a compact form with industrial durability to perform in daily production environments. The analogue mechanism requires minimal maintenance and avoids electronic failure modes, which favours long‑term availability in standard workshop conditions. Extensions (150 x Ø11.7) are available to adapt the instrument for specific setups, extending its utility without compromising measurement integrity. Built as part of the Metav IndustryLine, the gauge benefits from a quality‑controlled supply chain and a focus on tools that deliver professional results at an accessible price point, helping to simplify procurement and stock‑keeping in small to medium workshops.

Contact Metav Werkzeuge for application advice and to request the M312.133 three‑point internal micrometer for your inspection tasks

Technical Data

• Article number: M312.133
• GTIN: 4054469119465
• eClass: 21170335
• ETIM: EC003590
• Norm: DIN 863

Facts

• Measuring range: 12–16 mm
• Accuracy: 0.005 mm
• Setting ring: 12 mm
• Length: 80 mm
• Indication: analogue

Special features

• Tungsten carbide measuring faces
• Matt chrome‑plated scale and vernier
• Suitable for blind‑hole measurements
• Extension: 150 x Ø11.7
• Customs tariff number: 90173000

FAQ

How does the three‑point system improve centring compared with two‑point gauges?
The three‑point geometry ensures automatic centring within the bore; the M312.133 engages three equidistant contact points so readings are less affected by minor eccentricity, producing more repeatable internal diameters.

Can the gauge be used for blind‑hole measurements?
Yes, the design is optimised for blind‑hole inspection and the M312.133 specifically lists suitability for blind holes, allowing secure contact and reliable readings in confined depths.

What verification method is delivered with the instrument?
A setting ring (12 mm) is supplied for zeroing and quick verification of the measuring head prior to a measurement run, enabling traceable setup on the shop floor.

Which standard governs the construction and tolerancing of this gauge?
Manufacture and tolerance references conform to DIN 863, providing clear expectations for accuracy and interchangeability in professional metrology contexts.

What are the measuring faces and scale finishes?
The contact points are tungsten carbide, chosen for wear resistance, while the scale and vernier are matt chrome‑plated for improved legibility and corrosion protection.

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