125-150mm Three-Point Internal Micrometer For Blind Hole Measurement, Digital With ON/Zero, Mm/Inch, ABS, Preset, Hold, RB 4 Interface, Case - Metav IndustryLine

Take advantage of the instrument's combination of reliable digital readout, dedicated blind‑hole capability and a verified accuracy of ±0.006 mm for consistent in‑process control. The three‑point measuring geometry and a 125–150 mm measuring span make this tool suitable for medium‑range internal measurements; order directly via Metav Werkzeuge or consult the technical team for application advice.

Three‑point internal micrometer M312.257.S — digital instrument for blind‑hole measurement, 125–150 mm

The Three‑point internal micrometer M312.257.S is a digital internal micrometer engineered for precise measurement of blind holes and bore features within the 125–150 mm range

• Three‑point measuring geometry for stable contact
• Digital display with mm/inch, ABS and hold functions
• Measuring range 125–150 mm for workshop versatility
• High repeatability with a stated accuracy of ±0.006 mm

Consistent results for blind‑hole inspections

The instrument’s three‑point contact design provides stable centring in blind bores, reducing eccentricity and operator influence during measurement. With a dedicated geometry for blind‑hole applications and a measuring depth of 140 mm, this device ensures reproducible contact across the measured diameter and supports routine quality checks on housings and threaded blind bores. The solid construction minimises flex and contributes directly to repeatable readings, making it a pragmatic choice for production and inspection stations alike.

Clear, fast readout and data transfer for process control

A digital display with ON/0-, mm/inch, ABS, PRESET and HOLD keys offers straightforward operation and quick unit changes, reducing cycle time at the inspection bench. The instrument reads to 0.001 mm, providing fine resolution for comparative checks, while the integrated RB 4 data output lets measured values be logged or fed into QC systems for traceable process control. The ergonomic control layout and measurable weight of 2.6 kg support stable handling without excessive operator fatigue.

Workshop‑ready design that supports efficiency

Classified in the standard range for internal measuring tools, this device balances reach and stiffness for everyday machine‑shop tasks. The instrument includes hardened measuring faces suitable for industrial use and is delivered without a setting ring, enabling immediate deployment where custom setting rings are not required. Built to integrate into existing inspection routines, it simplifies bore verification on batches, supporting faster decision‑making and fewer stoppages in production.

Choose the Metav IndustryLine three‑point internal micrometer for reliable blind‑hole measurement and contact Metav Werkzeuge in Emmerich for application guidance and supply coordination

Technical Data

• Article number: M312.257.S
• GTIN: 4054469158969
• Manufacturer: Metav IndustryLine
• Tariff code: 90173000
• Data output: RB 4

Facts

• Measurement range: 125–150 mm
• Measuring depth: 140 mm
• Resolution (reading): 0.001 mm
• Accuracy: ±0.006 mm
• Weight: 2.6 kg

Special features

• Digital display with ON/0-, mm/inch, ABS, PRESET and HOLD
• Three‑point measuring geometry for blind‑hole measurement
• Hardened measuring faces included
• Delivery without setting ring

FAQ

What kinds of bores is this micrometer intended for?
The three‑point internal micrometer M312.257.S is intended primarily for blind‑hole and bore measurements in the 125–150 mm range, where a centred three‑point contact improves stability.

How precise are the measurements with this instrument?
The device offers a reading resolution of 0.001 mm and a stated accuracy of ±0.006 mm, suitable for workshop and quality‑control tasks requiring consistent repeatability.

Can measurement results be recorded electronically?
Yes, the instrument provides an RB 4 data output for transfer of measured values to compatible logging or QC systems.

Is a setting ring included with delivery?
No; delivery is without a setting ring, allowing shops to use their preferred calibration or setting tools.

What makes the three‑point design advantageous for blind holes?
The three‑point geometry centres itself in the bore, reducing runout and ensuring that contact points produce a stable, repeatable diameter measurement.

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