20-25mm Three-Point Internal Micrometer Digital With Measuring Drum Scale, IP65 - Metav IndustryLine

Take advantage of precise three‑point internal measurement, a 0.005 mm accuracy and a sealed design for reliable shop‑floor readings; order the instrument directly via Metav Werkzeuge or consult our specialists for application advice.

M312.235.M — Three‑point internal micrometer with digital display and IP65

The M312.235.M three‑point internal micrometer is a compact digital instrument for precise measurement of blind bores and small internal diameters in workshop and inspection environments.

• Digital display with ABS/INC/UNIT keys
• Three‑point measuring for blind bores
• IP65 protection for workshop conditions
• Accuracy 0.005 mm according to DIN 863

Precise internal measurement in the micro range

The micrometer is designed for exceptionally accurate internal measurements within the Micro range (10–100 mm) and covers the 20–25 mm span with a guaranteed 0.005 mm precision. The instrument’s three‑point measuring arrangement centres automatically inside blind bores, reducing alignment error and turning a multi‑step measuring task into a reproducible single action. Combined with the clear digital display, the result is faster inspection cycles and fewer re‑measurements — a direct gain in throughput for small‑component production and quality control.

Built to withstand the workshop environment

A sealed construction with IP65 rating and a matt‑chrome scale ensures the device resists dust and coolant, so measurements remain reliable even under harsh conditions. The measuring faces are hardened, giving long service life and stable contact geometry. The visible measurement drum with supplementary scaling supports quick visual checks, while the instrument’s compact footprint and 1.3 kg mass make it easy to handle without sacrificing rigidity — an advantage where repeatability matters more than sheer reach.

Designed for blind bores and practical use

Engineered specifically for blind‑hole measurement, the tool includes a setting ring and an extension 150xØ16, enabling flexible setups and repeatable siting in troublesome bore geometries. The integrated control layout (ON/OFF/SET and ABS/INC/UNIT keys) is arranged for efficient use during serial checks. This combination of mechanical centring and electronic readout simplifies process documentation and reduces operator influence on results, supporting steady quality in component series testing.

Data output and standards for traceability

Equipped with RB 4.1 data output, the device enables straightforward transfer of measurement values into documentation or SPC routines, removing manual transcription and the associated error risk. Conformity with DIN 863 underlines the instrument’s suitability for industrial metrology. Delivered with essential accessories and a practical extension set, it is ready for immediate integration into inspection benches and portable measuring tasks where blind‑bore accuracy is required.

For workshop and inspection teams seeking dependable blind‑bore measurement, contact Metav Werkzeuge about the Metav IndustryLine M312.235.M with IP65 protection and 0.005 mm accuracy to discuss delivery and application support

Technical data

• Article number: M312.235.M
• GTIN: 4054469156415
• Manufacturer: Metav IndustryLine
• Norm: DIN 863
• eClass: 21170335
• ETIM: EC003590

Facts

• Measuring range: 20–25 mm
• Resolution / reading step: 0.005 mm
• Weight: 1.3 kg
• Length: 90 mm
• Einstellring: 25

Special features

• Three‑point internal measuring design
• IP65 protection
• Digital display with ON/OFF/SET and ABS/INC/UNIT
• Measurement drum with scale
• Hardened measuring faces
• Includes setting ring and extension 150xØ16
• Data output: RB 4.1
• Suitable for blind bores
• Conforms to DIN 863

FAQ

How accurate is the instrument for internal diameters?
The M312.235.M delivers an accuracy of 0.005 mm, specified for the 20–25 mm measuring range, making it suitable for fine internal measurements.

Can the micrometer be used on blind bores?
Yes, the tool is specifically designed for blind‑hole measurement and includes accessories such as a setting ring and extension 150xØ16 to assist positioning in blind bores.

Is the device protected against coolant and dust?
The micrometer is rated IP65, providing protection against dust ingress and low‑pressure water jets typical in workshop environments.

Does the micrometer provide electronic data output?
The instrument offers RB 4.1 data output for transfer of measured values to documentation or SPC systems.

Which standard does the instrument comply with?
The device conforms to DIN 863, reflecting industrial requirements for dimensional measuring instruments.

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