16–20 mm Digital Three-Point Internal Measuring Gauge With Carbide Measuring Faces, IP65, Setting Ring - Metav IndustryLine

Taking advantage of the IP65 protection together with carbide measuring faces and a fine 0.001 mm display ensures reliable, repeatable internal diameter readings for confined bores; order the digital three-point inside micrometer directly via Metav Werkzeuge or consult the Metav advisors for application-specific advice.

Digital three-point inside micrometer M312.234.PN — 16–20 mm, IP65, carbide anvils

The Digital three-point inside micrometer M312.234.PN is a compact electronic instrument for precise internal diameter measurement in small bores and blind-hole applications.

• Digital readout 0.001 mm resolution
• Carbide measuring faces for wear resistance
• IP65 dust- and splash-proof construction
• Includes setting ring and extension

Accurate centring for blind-hole measurements

The three-point measuring head provides automatic centring inside cylindrical bores, which makes it especially effective for blind-hole bores and short internal diameters. Classified as a micro-range instrument (measurement range 16–20 mm), this tool combines compact geometry with high stiffness so that the short anvils remain torsion-resistant during measurement. The hardened carbide measuring faces preserve measuring geometry over intensive use, extending service life and reducing rework caused by worn contacts.

Traceable numerical precision and robust shop-floor design

With a display resolution of 0.001 mm and a stated accuracy of ±0.005 mm, the instrument meets demanding dimensional control tasks on the production line. The electronic module offers ON/PRESET, mm/inch and HOLD functions and an RB 6 data output for integration into measurement data collection systems. The sealed IP65 housing protects the electronics from chips and coolant—supporting consistent readings in workshop environments while maintaining compliance with DIN 863 for measuring instruments.

Practical features that support everyday metrology

Delivery includes a setting ring (Ø 16 mm) and an extension (150 x Ø11.8) for expanded measuring reach and straightforward calibration checks. The lightweight construction (approx. 1 kg) and simple key layout reduce handling time during repeated measurements. Designed for industrial use, the instrument suits machine shops and quality departments that require compact, repeatable internal measurements without the need for complex fixtures. For specification clarifications or measurement strategy, Metav’s technical team can provide further guidance based on production requirements.

Discuss measurement needs with Metav Werkzeuge and secure the M312.234.PN for reliable internal-diameter control on the shop floor

Technical data

• SKU: M312.234.PN
• GTIN: 4054469179100
• Label: Digital three-point inside micrometer, 16–20 mm, IP65 with carbide measuring faces, setting ring

Facts

• Measuring range: 16–20 mm
• Resolution: 0.001 mm
• Accuracy: ±0.005 mm
• Weight: 1 kg
• Protection class: IP 65
• Standard: DIN 863
• Customs tariff number: 90173000

Special features

• Carbide measuring faces (HM)
• Digital display with ON/PRESET, mm/inch and HOLD functions
• Data output: RB 6
• Includes setting ring (Ø 16 mm) and extension (150 x Ø11.8)
• Suitable for blind-hole bores (three-point centring)

FAQ

What measurement range does this instrument cover?
The M312.234.PN covers internal diameters from 16 to 20 mm and is therefore classified as a micro-range measuring instrument suitable for fine mechanical work.

How precise is the digital readout?
The digital module provides a resolution of 0.001 mm and an accuracy of approximately ±0.005 mm for the specified measuring range.

Can the device be used in wet or dusty workshop conditions?
Yes. The instrument’s IP65 protection rating keeps the electronics safe from dust ingress and low-pressure water jets, aiding reliable operation at the machine.

Is the micrometer suitable for blind-hole measurements?
The three-point measuring head is expressly designed for internal measurements in blind holes, supplying automatic centring for consistent results.

Which accessories are delivered with the micrometer?
Delivery includes a setting ring (Ø 16 mm) and an extension (150 x Ø11.8) for adaptation to specific measuring situations.

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