62-75mm Three-Point Internal Micrometer With Measurement Drum Scale, IP65, Calibrated (ISO 17025) - Metav IndustryLine

Precision bore checks benefit from the combination of ±0.005 mm accuracy, a digital display with ABS/INC/UNIT functions, and IP65 protection, ensuring reliable readings even in workshop environments; order the three‑point internal micrometer M312.240.M directly via Metav Werkzeuge or ask our consultants if needed.

Three‑point internal micrometer M312.240.M (digital, 62–75 mm) — Metav IndustryLine

A compact, digital three‑point internal micrometer M312.240.M designed for precise measurement of bores and blind holes in fine mechanical and production environments.

• Digital display with ABS/INC/UNIT keys
• Measurement range 62–75 mm
• Accuracy ±0.005 mm for fine bores

Precision where compactness matters

The instrument is classified in the micro measuring class (max. 10–100 mm), making it particularly suited to fine mechanical tasks where short, stiff measuring jaws are required. With a measurement range of 62–75 mm and a nominal accuracy of ±0.005 mm, this micrometer fills the gap between handheld gauges and larger bore metrology tools. Conformance to DIN 863 underlines its workshop compatibility, while the three‑point measuring system offers stable centring in circular bores and improved repeatability compared with single‑point probes.

Practical, workshop‑oriented feature set

Operation is simplified by the digital display with ON/OFF/SET and ABS/INC/UNIT keys, which enables rapid switching between absolute and incremental modes and unit conversion at the instrument. A data output RB 4.1 is provided for integration into inspection chains and digital logging systems. The measuring faces are hardened, reducing wear in routine use, and the scale and vernier are matt chrome‑plated, offering durable legibility even under industrial conditions. Included accessories — a setting ring and an extension (150×Ø23.4) — support efficient setup and access to deeper bores.

Robust design for repeatable results

Built to withstand everyday shop demands, the instrument carries an IP65 rating for protection against dust and low‑pressure water jets, helping to keep electronics and mechanics clean during operation. The solid construction and notable mass contribute to stable handling and minimise spurious movement during measurement cycles. For tasks such as blind‑hole checking, the three‑point geometry ensures the contact points engage evenly, so measuring of sacklochbohrungen (blind holes) is straightforward and reliable.

Application‑focused handling and benefits

The micrometer is intended for quality control and production checks in metalworking and precision engineering where compactness, repeatability and digital data capture are priorities. Its fine resolution supports detailed inspection and reduces rework by identifying deviations early. Routine maintenance is minimal: keep the hardened faces clean and free from chips, verify zeroing with the supplied setting ring and use the RB 4.1 data link for traceable measurement records. The combination of compact form, digital convenience and workshop‑grade protection supports faster measuring workflows and clearer documentation of results.

Contact Metav Werkzeuge today for advice on integrating the Metav IndustryLine three‑point internal micrometer M312.240.M into inspection routines and to arrange procurement from our Emmerich quality centre.

Technical data

• Article number: M312.240.M
• GTIN: 4054469162416
• SKU: M312.240.M

Facts

• Measurement range: 62–75 mm
• Resolution / accuracy: 0.005 mm
• Weight: 4 kg
• Overall length: 114 mm
• Protection class: IP 65
• Standard: DIN 863

Special features

• Digital display with ON/OFF/SET and ABS/INC/UNIT
• Data output: RB 4.1
• Hardened measuring faces
• Scale and vernier matt chrome‑plated
• Includes setting ring and extension (150×Ø23.4)
• Suitable for blind‑hole measurements

FAQ

What measurement range does this micrometer cover?
The micrometer covers a 62–75 mm measuring range and is classified in the micro class for compact, high‑precision internal measurements.

Is the instrument suitable for blind‑hole measurements?
Yes — the three‑point measuring geometry of the M312.240.M is expressly suitable for measuring blind holes, providing stable contact and reproducible results.

How accurate is the M312.240.M for fine bores?
The instrument offers an accuracy of ±0.005 mm, making it appropriate for fine bore inspection and precision workshop tasks.

Can measurements be transferred to a PC or data logger?
Yes, the M312.240.M features a data output RB 4.1, enabling connection to data acquisition systems for digital logging and process documentation.

What does the IP65 rating mean in practice?
IP65 indicates protection against dust ingress and low‑pressure water jets, helping to safeguard the micrometer’s electronics and mechanics in a workshop setting.

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