200–225 mm Three-Point Internal Micrometer For Blind Holes, Carbide Measuring Faces, Depth 140 mm, Ratchet, Case - Metav IndustryLine

The robust three-point internal measuring instrument combines a three-point geometry, carbide measuring faces and a ratchet thimble to deliver reproducible results in blind-hole inspection; benefit from precise analogue reading and stable handling for medium-range components. Order the Three-point internal micrometer M312.150.S directly via Metav Werkzeuge or ask the consultants for application guidance.

Three-point internal micrometer M312.150.S — 200–225 mm, carbide measuring faces (Metav IndustryLine)

The Three-point internal micrometer M312.150.S is an analogue instrument designed for precise measurement of blind-hole bores in medium-sized components across workshops and toolrooms.

• Three-point measurement for blind holes
• Carbide measuring faces for increased wear resistance
• Range 200–225 mm for medium workpieces
• Ratchet thimble for consistent measuring force

Accurate internal measurements for blind holes

The three-point measuring geometry ensures that diameter values are taken at three radial contact points, which stabilises the datum and reduces eccentricity when checking blind-hole bores. With an indicated accuracy ±0.008 mm and a vernier reading 0.005 mm, this analogue instrument gives a reliable balance between sensitivity and robustness for routine inspection. The design is particularly suited to measuring bores where single-point probes can tilt or give variable readings; the three-contact system averages out minor misalignments and simplifies comparison against tolerance bands.

Durable build and repeatable handling for daily use

Construction details prioritise longevity and user control: the contact faces are made from carbide, resisting wear during repeated measurements, while the matt-chrome scale and vernier minimise glare and ensure clear reading. The integrated ratchet thimble provides a reproducible measuring force, which reduces operator-induced variation and supports consistent results across shifts. The instrument’s mass and geometry provide stable handling for workshop tasks, and the analogue mechanism is favoured where battery-free, low-maintenance tools are required.

Prepared for medium-range workshop applications

With a measuring span of 200–225 mm and a measuring depth of 140 mm, the instrument falls into the standard workshop range for medium-sized components, fixtures and assemblies. It is therefore well suited to machine shops, jig and fixture inspection, and quality checks on housings and sleeves where blind-hole diameters must be verified. The device is supplied without a setting ring; calibration and setting procedures should be planned accordingly. Traceable identification (GTIN and article number) is provided for inventory and procurement processes.

Contact Metav Werkzeuge today to discuss whether the Metav IndustryLine Three-point internal micrometer M312.150.S fits your inspection routine and to request further technical details from our specialists at Metav Werkzeuge GmbH in Emmerich.

Technical data

• Article number: M312.150.S
• GTIN: 4054469158723
• Category: Internal micrometers

Facts

• Measuring range: 200–225 mm
• Measuring depth: 140 mm
• Accuracy: ±0.008 mm
• Reading: 0.005 mm
• Weight: 4.3 kg
• Tariff number: 90173000

Special features

• Three-point internal measuring geometry
• Carbide measuring faces
• Matt-chrome scale and vernier
• Ratchet thimble for reproducible force
• Analogue instrument for blind-hole bores
• Supplied without setting ring

FAQ

What measuring range does the instrument cover?
The Three-point internal micrometer M312.150.S covers a measuring range of 200–225 mm and is intended for medium-sized workpieces.

How precise is the measurement result?
The device offers an accuracy of ±0.008 mm with a vernier reading increment of 0.005 mm, which supports routine dimensional checks and quality control.

Are the contact faces suitable for high-use inspection?
Yes; the contact faces are made from carbide, which increases wear resistance and prolongs service life even under frequent use.

Is a setting ring included for calibration?
Delivery is without a setting ring; calibration and setting must be performed with an appropriate gauge or reference ring.

For which applications is this instrument especially suited?
The instrument is optimised for blind-hole measurements in machine parts, assemblies and fixtures within the standard workshop range.

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