25-30mm Three-Point Internal Micrometer Digital With Measuring Drum Scale, IP65 - Metav IndustryLine

Benefit from a combination of high precision, robust protection and ready-to-use accessories for reliable internal measurements in fine mechanical work; order the instrument directly via Metav Werkzeuge or consult our specialists for application advice.

M312.236.M — Digital three-point internal micrometre, 25–30 mm, Metav IndustryLine

The M312.236.M is a digital three-point internal micrometre designed for precise measurement of blind and through bores in fine mechanical workshops and quality control environments

• Digital display with ABS/INC/UNIT functions
• High-resolution 0.005 mm reading accuracy
• IP65 dust- and splash-resistant
• Delivered with setting ring and extension

Precision where small tolerances matter

The three-point measuring principle ensures stable, concentric contact with the bore, reducing alignment errors common with two-point probes; coupled with a reading of 0.005 mm, measurements reach a fine resolution that suits high-precision workshop tasks. The instrument’s display and control set (ON/OFF/SET and ABS/INC/UNIT) simplify reading and mode selection, while the measuring drum with scaling provides a secondary, analogue reference. These features support faster inspection cycles and minimise uncertainty in comparison to manual gauges without electronic readout.

Robust construction for everyday shop use

Constructed to the requirements of DIN 863, the device combines a matt‑chrome plated scale and vernier with hardened measuring faces, delivering wear resistance and long-term stability. The unit’s IP65 rating protects the electronics from dust and water jets, making it suitable for industrial environments where coolant mist or dust are present. The compact form factor, classified in the micro measuring class (max. range up to 100 mm), gives good rigidity for its size and aids repeatable handling during routine inspections.

Ready for blind-hole bores and extended reach

Designed specifically for internal bores, the tool is suitable for blind‑hole bores and is supplied with a setting ring and an extension (150 x Ø16) to access recessed features. The three-point anvils combine with the extension to ensure consistent contact even in difficult-to-reach geometries, reducing the need for improvised fixturing. The available data output format (RB 4.1) enables integration into measurement documentation routines or simple data collection workflows without modifying the mechanical measuring principle.

Practical benefits for quality control workflows

Weighing 1.3 kg and with a compact length of 90 mm, the instrument balances stability and portability for bench and shop floor use. The digital readout accelerates decision-making in inspection steps, while the analogue drum scale remains useful for cross-checking. Supplied complete in a transport case with accessories, the micrometre is ready for immediate use on the production line or in the inspection room, reducing setup time and supporting consistent measurement practice.

Contact Metav Werkzeuge for tailored advice or to arrange purchase of the Metav IndustryLine M312.236.M with its 0.005 mm precision — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: M312.236.M
• GTIN: 4054469162379
• Manufacturer: Metav IndustryLine
• Standard: DIN 863
• Data output: RB 4.1

Facts

• Measuring range: 25–30 mm
• Resolution / accuracy: 0.005 mm
• Weight: 1.3 kg
• Length: 90 mm
• Protection class: IP65

Special features

• Digital display with ON/OFF/SET and ABS/INC/UNIT
• Measuring drum with scaling
• Hardened measuring faces
• Delivered with setting ring and extension (150 x Ø16)
• Suitable for blind‑hole bores
• Scale and vernier matt‑chrome plated
• Supplied in transport case

FAQ

What measuring range does this instrument cover? The micrometre covers a measuring range of 25–30 mm and is classified in the micro measuring class for compact, high‑precision internal gauging.

Is the instrument suitable for blind‑hole bores? Yes, the tool is suitable for blind‑hole bores; the three‑point design and included extension facilitate reliable contact in recessed features.

What resolution and accuracy can be expected? The readout and accuracy are specified as 0.005 mm, providing fine resolution for demanding inspection tasks.

Can measurement data be exported electronically? Yes, the device offers data output in the RB 4.1 format for straightforward transfer into documentation workflows.

Which accessories are included? Delivery includes a setting ring and an extension (150 x Ø16), and the instrument is supplied in a transport case for safe handling.

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