75-88mm Three-Point Internal Micrometer Digital, Measuring Drum With Scale, IP65 - Metav IndustryLine

Take advantage of the combination of high-resolution measurement (0.005 mm), a robust IP65-protected housing, and a digital readout with ABS/INC/UNIT functions for reliable, repeatable bore inspection; order the instrument directly via Metav Werkzeuge or consult our specialists for application support.

Three-point inside micrometer M312.241.M — digital instrument, 75–88 mm measuring range (Metav IndustryLine)

The Three-point inside micrometer M312.241.M is a digital instrument designed for precise internal measurements, especially suited to blind-hole and bore inspections in workshop and production environments.

• Digital display with ABS/INC/UNIT
• Accuracy 0.005 mm (5 µm)
• Measuring range 75–88 mm
• IP65 protection for harsh environments

Precision that reduces rework and speeds inspection

The instrument’s three-point measuring system guarantees concentric contact in blind bores, reducing alignment errors compared with two-point gauges. With an accuracy of 0.005 mm, the gauge provides results in the sub‑10 µm class suitable for demanding quality control tasks. The digital readout with ON/OFF/SET and ABS/INC/UNIT keys simplifies measurement logging and minimises transcription errors, which in turn shortens inspection cycles and improves throughput.

Designed for reliable use in workshop conditions

Built to DIN 863 standards, the micrometer is finished with a matt‑chromed scale and vernier for durable legibility. The instrument complies with IP65 protection, keeping dust and water jets at bay so that measurements remain reliable on the shop floor. Hardened measuring faces ensure wear resistance during repeated contact with internal surfaces. Delivered complete with a setting ring and an extension, the instrument is ready to handle varied bore depths and workpiece geometries.

Practical handling and traceable delivery for production use

The device is supplied in a protective case for safe transport and storage and includes the extension specified (150 × Ø23.4). The integrated measuring thimble with scale assists in coarse positioning before the digital readout is used for fine value capture. The combination of tactile control and electronic display supports both traditional workflow and digitised data capture via the available data output RB 4.1, enabling integration into inspection routines where recorded values are required.

Contact Metav Werkzeuge in Emmerich for tailored advice on integrating the M312.241.M into existing quality processes and to arrange prompt delivery from our European stock.

Technical data

• SKU: M312.241.M
• GTIN: 4054469162423
• Article number: M312.241.M
• Norm: DIN 863
• Data output: RB 4.1

Facts

• Measuring range: 75–88 mm
• Resolution / reading: 0.005 mm
• Accuracy: 0.005 mm (5 µm)
• Weight: 4.3 kg
• Overall length: 114 mm

Special features

• Digital display with ON/OFF/SET and ABS/INC/UNIT
• Three-point measuring system for blind bores
• Measuring thimble with scale
• Delivered with setting ring and extension (150 × Ø23.4)
• IP65 protection
• Matt‑chromed scale and vernier
• Hardened measuring faces
• Protective transport case included

FAQ

What accuracy can be expected from this instrument?
The M312.241.M three‑point inside micrometer delivers an accuracy of 0.005 mm (5 µm), making it suitable for high‑precision internal measurements.

Is the gauge suitable for measuring blind holes?
Yes. The instrument is expressly designed for blind‑hole inspection and includes a three‑point system and an extension (150 × Ø23.4) for deeper bores.

Does the device allow digital data transfer?
The micrometer features a data output RB 4.1, enabling digital integration where required; the instrument also provides ABS/INC/UNIT functions on the display.

What protection does the housing offer in workshop environments?
The gauge carries IP65 protection, ensuring reliable operation in dusty environments and against low‑pressure water jets.

Which accessories are supplied with the micrometer?
The product is supplied with a setting ring, the stated extension, and a protective case for safe transport and storage.

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