25-50mm Disc Anvil Micrometer Ø30mm Painted Frame, Chrome-Plated Thimble, Ratchet, Supplied in Case - Metav IndustryLine

This micrometer delivers measurable gains in workshop reliability: precise 0.004 mm accuracy across a compact 25–50 mm range combined with a ratchet stop ensures repeatable measuring results. Supplied in a transport case and finished with a matt‑chrome drum for durable, low‑glare reading — order directly via Metav Werkzeuge or contact our consultants for specification advice.

Teller‑Face Micrometer M309.351 – 25–50 mm range with 30 mm disc anvil (Metav IndustryLine)

Teller‑Face Micrometer M309.351 is a compact, analogue micrometer for fine mechanical and workshop metrology, designed for precise external measurements on small to medium components.

• Compact micro class for fine mechanical work
• High repeatability with ratchet stop
• 30 mm disc anvil for stable contact
• Non‑rotating spindle to avoid surface marks
• Supplied in a transport case for safe handling

Precision that reduces rework and saves time

The M309.351 is engineered for consistent accuracy in routine inspection tasks. With a specified accuracy of 0.004 mm and a reading of 0.01 mm, this analogue instrument provides a reliable measurement basis for quality control and setup operations. The ratchet stop ensures uniform measuring force, which reduces operator‑induced variation and helps maintain production tolerances. Classified as micro class (maximum range within 10–100 mm), it is particularly suitable where compactness and stiffness matter, such as watchmaking, instrument parts and fine mechanical assemblies.

Robust construction and low‑fatigue operation

A painted frame combined with a matt chrome‑plated measuring drum gives the micrometer both visual durability and reduced glare at the scale — improving legibility under bright workshop lighting. The non‑rotating spindle minimises surface damage on delicate parts during measurement, while the 30 mm disc anvil increases contact area for improved stability on flat or slightly contoured surfaces. Weighing 0.6 kg, the tool balances solidity and manoeuvrability for single‑handed use on benches or on the machine shop floor.

Practical calibration and traceability for production use

This analogue micrometer is delivered ready for use and is supplied in a protective transport case, making it straightforward to include in mobile inspection kits or tool drawers. Standard calibration is applied prior to dispatch, offering immediate usability for routine checks and first‑piece inspections. The familiar thimble and drum reading method keeps measurement procedures transparent to trained staff and simplifies documentation in inspection reports.

Ideal applications and real‑world benefits

Designed for external measurements, the instrument excels on small housings, shafts and turned parts where a stable contact face is needed. The combination of a disc anvil and ratchet stop reduces rework by giving reproducible results from the first measurement, while the matt chrome finishing and painted frame extend lifetime under workshop conditions. For operations seeking a compact, high‑repeatability gauge, this micrometer offers a practical balance of precision, robustness and ease of handling.

For reliable precision from Metav IndustryLine, contact Metav Werkzeuge for ordering and technical consultation — Metav Werkzeuge provides practical expertise from Emmerich and can advise on integration into workshop inspection routines.

Technical data

• Article number: M309.351
• GTIN: 4054469118789
• Category: Messschrauben (micrometers)
• Manufacturer: Metav IndustryLine

Facts

• Measuring range: 25–50 mm
• Accuracy: 0.004 mm
• Reading / resolution: 0.01 mm
• Anvil diameter: Ø 30 mm
• Weight: 0.6 kg

Special features

• Painted frame
• Measuring drum matt chrome‑plated
• Ratchet stop included
• Non‑rotating spindle
• Analogue / mechanical design
• Supplied in a transport case

FAQ

What measuring range does this micrometer cover?
The M309.351 covers a 25–50 mm measuring range, placing it in the micro class for compact, high‑precision external measurements.

How precise is the instrument for inspection tasks?
This analogue micrometer is specified with an accuracy of 0.004 mm and a reading of 0.01 mm, suitable for workshop quality control and setup work requiring reliable repeatability.

Why is the disc anvil useful compared with a small point anvil?
The 30 mm disc anvil provides a larger contact surface, improving stability and reducing local deformation on softer parts during measurement.

Does the spindle rotation affect surface finish?
The device features a non‑rotating spindle, which prevents the spindle turning against the measured surface and so reduces the risk of marking delicate components.

Is the micrometer protected for transport or storage?
Yes — the metre is supplied in a transport case to protect the instrument during transport and when stored with other tools.

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