30-40mm Three-Point Internal Micrometer 0.001mm Resolution With Setting Ring And 152.4×Ø23.5 Extension, In Case - Metav IndustryLine

Benefit from the combination of three‑point geometry and 0.001 mm reading for highly repeatable blind‑bore inspections; the instrument’s ±0.005 mm accuracy and supplied setting ring plus extension ensure reliable reference measurements and secure handling in the workshop. Order the three‑point internal micrometer directly via Metav Werkzeuge or ask our consultants if needed.

Three‑point internal micrometer M312.437 – 30–40 mm, 0.001 mm resolution (Metav IndustryLine)

The Three‑point internal micrometer M312.437 is a precision instrument designed for internal measurements of blind bores from 30 to 40 mm, supplied with a setting ring and a deep‑reach extension for consistent, reproducible results.

• 0.001 mm reading
• Three‑point measuring principle
• Supplied with setting ring
• Extension for deep bores

Exceptional precision for micro bore inspection

The three‑point measuring principle delivers a centred contact on the bore, which together with the 0.001 mm reading reduces eccentricity errors and improves repeatability when inspecting small diameters. Classified in the micro range for instruments up to 100 mm, this gauge is optimised for fine mechanical components where small deviations matter. With a documented accuracy of ±0.005 mm, the device provides a measurable quality standard for routine checks and final inspection steps; this level of performance shortens decision cycles and reduces scrap in high‑precision machining.

Robust design for repeatable handling

Durability and handling stability are delivered via hardened measuring faces and a matt‑chrome scale and vernier, which resist wear while keeping reflections and glare to a minimum during reading. The included setting ring establishes a traceable reference, while the supplied extension (152.4 x Ø23.5 mm) allows measurement of deeper blind bores without compromising alignment. These mechanical aids translate into fewer re‑measurements and faster throughput on the shop floor, as well as consistent measurement chains for quality documentation.

Practical integration into workshop workflows

Designed specifically for blind‑hole measurement, the gauge adapts to common machine‑shop tasks such as bearing seat inspection, valve‑body bores and precision housings. The three‑point geometry centres in the bore automatically, which simplifies operator technique and reduces the influence of varying contact pressure. Delivered complete with protective transport case and accessories, the instrument is ready for immediate use at the inspection bench and can be introduced into existing QA routines without elaborate set‑up or additional fixturing.

For reliable micro‑bore measurement choose the Metav IndustryLine three‑point internal micrometer M312.437; contact Metav Werkzeuge in Emmerich for technical advice at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss application details

Technical data

• Article number: M312.437
• GTIN: 4054469182193
• Weight: 2.5 kg
• Measuring range: 30–40 mm
• Reading: 0.001 mm
• Accuracy: ±0.005 mm

Core dimensions

• Extension: 152.4 x Ø23.5 mm
• Setting ring: Ø40 mm
• Measuring faces: hardened
• Scale and vernier: matt chrome‑plated

Applications & features

• Designed for blind bores
• Supplied in protective case
• Three‑point internal measurement
• Suited for micro bore work

FAQ

What bore range can this instrument measure?
The instrument measures internal diameters from 30 to 40 mm, making it suitable for small to micro‑sized bores.

Is the gauge suitable for blind‑hole measurement?
Yes. The three‑point design and supplied extension make the M312.437 ideal for reliable measurement of blind bores.

What resolution and accuracy does the instrument offer?
The device provides a 0.001 mm reading with a stated accuracy of ±0.005 mm, offering fine resolution for quality control tasks.

Are the measuring faces wear resistant?
The measuring faces are hardened to resist wear and maintain accuracy during routine use.

What accessories are included with the instrument?
The M312.437 is supplied with a setting ring, a deep‑reach extension (152.4 x Ø23.5 mm) and a protective transport case.

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