25-50mm Plate Anvil Micrometer Ø20mm Anvil, Ratchet Stop, Painted Frame, Matt Chrome Thimble - Metav IndustryLine

Take advantage of the precise ±0.004 mm repeatability and the user-friendly ratchet stop for consistent measurement force; the lacquered frame and matt‑chrome thimble ensure durability in daily workshop use. Order directly via Metav Werkzeuge or consult the Metav team for application advice and availability.

Disc‑anvil micrometer ND 25–50 mm (M309.251) — Metav IndustryLine, 20 mm anvil, ratchet stop

The Disc‑anvil micrometer ND 25–50 mm (M309.251) is a mechanical measuring instrument designed for reliable outside measurements in machining and quality control, combining a large Ø20 mm disc anvil with a matt‑chrome thimble and ratchet stop for repeatable results.

• 25–50 mm measurement range
• 20 mm disc anvil
• Accuracy ±0.004 mm
• Non‑rotating spindle design
• Ratchet stop for uniform force

Consistent accuracy for inspection and production

The micrometer delivers a verified accuracy of ±0.004 mm, making it suitable for precision checks on turned parts, gauges and finished components where tolerance control is critical. With a resolution of 0.01 mm on the analogue scale and a solid mechanical design, the instrument translates calibrated spindle movement into clear, repeatable measurements. This level of precision reduces scrap and rework by ensuring that measured values reflect the true dimension rather than operator variation.

Durable construction for daily workshop use

A lacquered frame provides corrosion protection while the matt‑chrome thimble resists wear and glare, supporting long service life in demanding environments. The non‑rotating spindle minimises marking and lateral play during contact with the workpiece, and the integrated ratchet stop ensures the same measuring force is applied every time. Together, these design choices mean the instrument keeps calibration longer and maintains dependable performance across repetitive inspection tasks.

Simple mechanical operation with reliable handling

Analogue operation keeps the tool straightforward and robust: the graduated thimble offers immediate feedback and requires no batteries, while the ratchet delivers tactile control of end‑stop force. The Ø20 mm disc anvil provides a stable contact surface for convex or flat profiles, improving contact reliability compared with smaller-point anvils. For workshop professionals and inspectors who prefer mechanical instruments, this tool combines familiar handling with industrial‑grade repeatability.

Integration into workshop quality routines

The instrument is positioned for use in machining shops, maintenance departments and small‑scale inspection benches, where straightforward tools that provide statistically reliable results are preferred. As part of the Metav IndustryLine, it benefits from Metav’s quality control and logistics: a transparent supply chain from Emmerich supports dependable replenishment and consistent tooling standards across multiple workstations. For procurement specialists, the micrometer represents a pragmatic balance of precision, robustness and everyday usability.

Contact Metav Werkzeuge in Emmerich for tailored advice on the Metav IndustryLine micrometer M309.251 — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific measurement tasks.

Technical data

• Article number: M309.251
• GTIN: 4054469118703
• ECLASS: 21170328
• ETIM: EC003590
• Tariff number: 90173000

Facts

• Measuring range: 25–50 mm
• Resolution (reading): 0.01 mm
• Accuracy: ±0.004 mm
• Anvil diameter: Ø20 mm
• Weight: 0.6 kg

Special features

• Lacquered frame
• Matt‑chrome measuring thimble
• Ratchet stop
• Non‑rotating spindle
• Analogue micrometer
• Category: micrometer (disc‑anvil type)

FAQ

What is the measuring range of this micrometer?
The measuring range is 25–50 mm for the Disc‑anvil micrometer ND 25–50 mm (M309.251) from Metav IndustryLine.

What accuracy and resolution can be expected?
The instrument provides an accuracy of ±0.004 mm with an analogue reading resolution of 0.01 mm, suitable for routine workshop inspection.

How does the ratchet stop improve measurements?
The ratchet stop on the Metav IndustryLine micrometer M309.251 ensures a uniform measuring force, reducing variation caused by differing operator pressure.

Is the spindle design important for surface protection?
Yes, the non‑rotating spindle design minimises marking and lateral movement during contact, protecting delicate surfaces and improving repeatability.

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