25-50mm Micrometer With Ratchet Thimble 0.01mm Resolution, Painted Frame, DIN 863, Plastic Case - Metav IndustryLine

Compact, reliable and built to the DIN standard, the micrometer combines a 0.01 mm reading with a ratchet stop and a robust powder‑coated frame for consistent external measurements; order the instrument directly via Metav Werkzeuge or ask our consultants if additional technical data is required.

M304.409 Outside Micrometer – 25–50 mm range, 0.01 mm resolution (Metav IndustryLine)

The M304.409 is an analogue outside micrometer designed for precise external measurements of small components in workshops and toolrooms.

• Ratchet stop for consistent measuring force
• 0.01 mm resolution on a thimble scale
• Powder‑coated frame with matt‑chrome measuring drum
• Conforms to DIN 863 standard

Accurate, repeatable readings for routine quality checks

The analogue thimble provides a 0.01 mm graduation that supports fine, repeatable readings for everyday measurement tasks. The integrated ratchet stop prevents over‑tightening and reduces variation caused by manual force, which improves reproducibility when checking batches or setting up fixtures. Conformity to DIN 863 gives a reliable reference point for production and inspection routines and simplifies the documentation of process capability and traceable checks.

Durable construction that eases handling in the workshop

A powder‑coated frame reduces surface wear and improves visibility in busy environments, while the matt‑chrome measuring drum resists glare for clearer scale reading. The spindle runs on a 0.5 mm pitch, with the spindle pitch 0.5 mm translating each full rotation of the thimble into a precise axial movement; this mechanical design yields predictable feel and fine control when approaching the nominal dimension. The solid finish of the measuring faces and drum supports stable contact and straightforward cleaning.

Ideal size class for fine mechanical and general engineering tasks

With a measuring span of 25–50 mm, this instrument sits in the compact range that balances reach and rigidity for small to medium components. This size class is well suited to precision metalwork, component assembly, and toolmaking where space is limited but accurate external measurement is essential. The tool’s proportions make single‑hand operation practical while retaining the stiffness required to avoid deformation on short workpieces.

Simple operation and straightforward upkeep

Reading the scale requires no electronics, which removes reliance on batteries and simplifies maintenance for busy shops. The ratchet mechanism not only standardises contact force but also signals when adequate measuring pressure has been reached, reducing operator error in repetitive checks. Routine care—cleaning the faces after use and storing the instrument protected from dust and impact—preserves accuracy and extends service life, supporting a dependable metrology routine on the shop floor.

Contact Metav Werkzeuge GmbH in Emmerich for technical advice and procurement of the Metav IndustryLine M304.409 micrometer

Technical Data

• Article number: M304.409
• GTIN: 4054469116884
• Type: Analogue outside micrometer
• Standard: DIN 863
• eClass: 21170328
• ETIM: EC003590

Facts

• Measuring range: 25–50 mm
• Resolution: 0.01 mm
• Spindle pitch: 0.5 mm
• Spindle diameter: 6.5 mm
• Zolltarifnummer: 90173000
• Ratchet stop: yes

Special features

• Frame: powder‑coated blue
• Measuring drum: matt‑chrome finish
• Analog readout (thimble)
• Category: Messschrauben (outside micrometer)

FAQ

What measurement range does the micrometer cover?
The M304.409 covers a measuring span of 25–50 mm, suited to compact and precise external measurements.

What is the resolution of the instrument?
The thimble scale provides a resolution of 0.01 mm for fine, repeatable readings.

How does the ratchet stop improve measurement quality?
The ratchet stop on the M304.409 standardises the contact force at the spindle‑workpiece interface, reducing operator‑induced variation and improving repeatability.

Is the micrometer compliant with recognised standards?
Yes, the instrument is manufactured to comply with DIN 863, providing a clear benchmark for workshop inspection procedures.

What materials and finishes are used on the micrometer?
The frame is powder‑coated blue for durability and visibility, and the measuring drum is finished in matt chrome to reduce glare and aid clear reading.

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