50–63mm Three-Point Internal Micrometer 0.001mm Resolution With Setting Ring And Extension In Case - Metav IndustryLine

Benefit from sub‑micrometre resolution combined with a robust three‑point contact system for repeatable blind‑hole inspections; the supplied setting ring and extension simplify setup and reduce measurement variation. Order the Three‑point internal micrometer directly via Metav Werkzeuge or consult the specialists for application advice.

Three‑point internal micrometer M312.460 — 50–63 mm, 0.001 mm resolution (Metav IndustryLine)

The Three‑point internal micrometer M312.460 is a purpose‑built gauge for precise internal diameter checks, optimised for blind‑hole and bore inspection in production and quality control environments.

• Three‑point contact for centred internal measurement
• Resolution 0.001 mm for fine discrimination
• Includes setting ring Ø62 mm for traceable zeroing
• Extension 152.4 mm × Ø23.5 mm for blind holes

Precision where blind‑hole inspection must be reliable

The M312.460 combines a stable three‑point contact geometry with a fine 0.001 mm resolution, delivering measurements that are both repeatable and sensitive enough for narrow tolerances. With a stated accuracy of ±0.005 mm, the instrument is classified in the micro range and is particularly suited to fine mechanical and component inspection where centred contact prevents tilting and off‑axis errors. The matt‑chrome scale and vernier improve legibility under workshop lighting while resisting surface wear, which helps preserve long‑term measurement integrity.

Designed for repeatable setups and traceable zeroing

Built‑in features such as the Ø62 mm setting ring allow straightforward verification and reproducible zeroing before a measuring run, cutting setup time and reducing measurement scatter between operators. The supplied extension (152.4 mm × Ø23.5 mm) makes the gauge practical for deeper blind bores where standard anvils would not reach, maintaining contact stability throughout the stroke. These attributes translate into faster quality checks, fewer rework cycles and a clearer audit trail in serial inspection tasks.

Practical handling tailored to workshop routines

Ergonomics and robustness matter in daily use: the instrument’s mass and construction provide a steady feel during measurement and make it less sensitive to hand tremor. The presence of defined measuring faces ensures consistent contact geometry, and the gauge’s form factor supports convenient handling on a busy inspection bench. For operations that require a documented chain of measurement, the combination of fine resolution and practical setup aids supports reliable decisions in production control and acceptance testing.

Contact Metav Werkzeuge for a specification review or to request accessory options for the Metav IndustryLine three‑point internal micrometer M312.460; our specialists in Emmerich will advise on application fit and setup requirements

Technical data

• SKU: M312.460
• GTIN: 4054469182216
• Manufacturer: Metav IndustryLine
• Weight: 3.4 kg
• Material: Scale and vernier matt chrome‑plated
• Measuring range: 50–63 mm
• Resolution: 0.001 mm
• Accuracy: ±0.005 mm
• Setting ring: Ø62 mm
• Extension: 152.4 mm × Ø23.5 mm

Core specifications

• Measuring range min: 50 mm
• Measuring range max: 63 mm
• Resolution (display/readout): 0.001 mm
• Nominal accuracy: ±0.005 mm
• Weight: 3.4 kg
• Setting ring diameter: 62 mm
• Extension dimensions: 152.4 mm × Ø23.5 mm

Special features

• Three‑point internal measurement principle
• Suitable for blind‑hole (sack‑hole) measurement
• Matt‑chrome scale and vernier for readability
• Designed for micro‑class internal inspection
• Includes setting ring and extension for repeatable setups

FAQ

What measuring range does this instrument cover?
The M312.460 three‑point internal micrometer covers a measuring span from 50 mm to 63 mm, making it appropriate for small to mid‑diameter bore inspection.

Is the gauge suitable for blind‑hole measurements?
Yes—this three‑point internal micrometer is specifically designed for blind‑hole measurement and is supplied with an extension (152.4 mm × Ø23.5 mm) to reach deeper bores.

What resolution and accuracy can be expected during use?
The gauge provides a resolution of 0.001 mm and a nominal accuracy of ±0.005 mm, delivering fine discrimination for quality control tasks.

Which accessories assist traceability and setup?
A Ø62 mm setting ring is included for traceable zeroing and repeatable setup; the extension supports measurement of recessed or deep bores.

How durable and readable is the scale?
The scale and vernier are matt chrome‑plated, which improves contrast under workshop lighting and resists wear in regular use.

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