87-100mm Three-Point Internal Micrometer Digital, Measuring Drum With Scale, IP65 - Metav IndustryLine

Take advantage of high-precision ±0.005 mm measurement, robust IP65 protection, and integrated digital data output for dependable inspection of blind bores; order the instrument directly via Metav Werkzeuge or contact our consultants for application advice.

Three-point internal micrometre M312.242.M — digital, 87–100 mm measuring range by Metav IndustryLine

The Three-point internal micrometre M312.242.M is a digital inside micrometre designed for accurate measurement of blind bores and internal diameters in fine mechanical and workshop environments.

• Digital readout with ABS/INC/UNIT functions
• Three-point measuring principle for repeatable centring
• Accuracy ±0.005 mm for high-precision checks
• IP65 protection for shop-floor resilience

Precise bore measurement that reduces rework

The three-point measuring concept ensures reliable centring in blind bores, minimising positional error when compared with two-point probes; combined with a measuring accuracy of ±0.005 mm, this makes the instrument suitable for demanding inspection tasks where tight tolerances matter. The digital display with ON/OFF/SET and ABS/INC/UNIT keys offers straightforward reading and unit switching, while the RB 4.1 data output supports traceable measurement logging. Conformity with DIN 863 underlines the instrument’s suitability for industrial quality control.

Built to withstand workshop conditions

Construction details such as the matt-chrome scale and vernier, sealed electronics and IP65 ingress protection protect the device against coolant spray and dust, extending service life in busy production areas. The presence of solid measuring faces and a robust drum with clear scaling promotes repeatability even during frequent use. The design balances tactile durability with the precision required for internal measurements, helping to reduce inspection time and avoid costly rework.

Ready-to-use kit and straightforward integration

Delivered complete with a setting ring and an extension, the micrometre is prepared for immediate use across a range of blind-bore depths. The digital interface simplifies manual reading and the RB 4.1 output enables direct capture of results for statistical process control or documentation. Classified within the micro measurement range (max 100 mm), the tool matches the needs of watchmaking, small-part assembly and precision toolrooms, offering a compact solution where space and accuracy are critical.

For tailored advice or to arrange supply from Emmerich, contact Metav Werkzeuge — info@metav-werkzeuge.com or call +49 2822 7131930 — for specialist guidance on integrating the M312.242.M into existing inspection routines.

Technical details

• SKU: M312.242.M
• GTIN: 4054469162430
• Manufacturer: Metav IndustryLine

Key figures

• Measuring range: 87–100 mm
• Minimum range: 87 mm
• Maximum range: 100 mm
• Indication / display increment: 0.005 mm
• Accuracy: 0.005 mm
• Length: 114 mm
• Weight: 4.6 kg
• Protection class: IP65
• Standard: DIN 863

Features and accessories

• Digital display with ON/OFF/SET and ABS/INC/UNIT buttons
• Data output: RB 4.1
• Measuring drum with scale
• Measuring faces included
• Suitable for blind bores
• Includes setting ring and extension
• Matt-chrome scale and vernier finish

FAQ

What measuring range does the device cover?
The measuring range is 87–100 mm; the three-point internal micrometre M312.242.M is therefore classified in the micro range for compact, high-precision internal measurements.

Can results be transferred to a PC or SPC system?
Yes. The instrument provides an RB 4.1 data output for direct connection to data-logging systems and enables simple integration into documentation workflows.

Is the device suitable for use at the machine?
The unit’s IP65 rating and sealed electronics make it robust enough for shop-floor use where splash resistance and dust protection are required.

Which accessories are supplied?
The micrometre is supplied with a setting ring and an extension, allowing immediate adaptation to various blind-bore depths without additional purchases.

How precise is the measurement and which standard applies?
The device offers an accuracy of ±0.005 mm and is specified to the requirements of DIN 863, making it suitable for demanding quality-control tasks.

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