50-65mm Three-Point External Micrometer 0.01mm Graduation, Carbide Faces, Ratchet, Wooden Case - Metav IndustryLine

Take advantage of a stable three-point contact system, 50–65 mm measuring range and 0.01 mm resolution for reproducible diameter checks; the carbide measuring faces and ratchet stop ensure long service life and consistent measuring force — order the instrument directly via Metav Werkzeuge or consult the specialists for application advice.

3-point external micrometer M309.024 — 50–65 mm, 0.01 mm resolution (Metav IndustryLine)

A 3-point external micrometer M309.024 designed for precise diameter measurement of triangular and other polygonal workpieces in fine mechanical and inspection tasks

• Three-point contact for stable outer-diameter checks
• Measuring range 50–65 mm
• Resolution 0.01 mm
• Carbide measuring faces for high wear resistance

Repeatable three-point measurement for polygonal parts

The three-point contact geometry delivers a stable seating on non-cylindrical profiles, reducing the risk of tilted or inconsistent readings when measuring triangular or polygonal workpieces. Combined with the ratchet stop, the spindle applies a constant measuring force so that each measurement is comparable — an important advantage in serial checks. The analogue 0.01 mm graduation provides fine resolution without reliance on batteries, while the instrument’s stated accuracy of ±0.007 mm positions it at the higher end of mechanical micrometers, suitable where sub‑hundred‑micrometre consistency is required.

Robust finish and low-maintenance measuring faces

A lacquered frame paired with a matt‑chromed measuring drum gives the device a workshop‑proof surface that resists corrosion and handling marks. The carbide measuring faces (cemented carbide) protect the contact areas against wear when checking abrasive or hard materials, preserving calibration over extended use. Delivery includes a protective transport case, which simplifies secure storage and movement between bench and inspection station and helps to prolong service life by reducing accidental damage during handling.

Practical range, classification and set‑up

With a measuring span of 50–65 mm, this instrument falls into the Micro (10–100 mm) category, making it ideal for precision jobs where compact size and high stiffness matter — for example, watchmaking, small fasteners and detail checks on machined components. The micrometer is supplied with a 50 mm setting gauge for rapid verification of zero position and repeat checks. As an analogue instrument, it suits environments where straightforward, robust metrology is preferred and where battery‑free operation is beneficial.

For reliable high‑precision three‑point measurements select the Metav IndustryLine micrometer M309.024 — contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 for specific application guidance

Technical data

• Article number: M309.024
• GTIN: 4054469117591
• eClass: 21170328
• ETIM: EC003590
• Customs tariff number: 90173000

Facts

• Measuring range: 50–65 mm
• Resolution: 0.01 mm
• Accuracy: 0.007 mm
• Setting gauge: 50 mm

Special features

• Three‑point external measurement
• Analogue micrometer (mechanical)
• Carbide measuring faces
• Lacquered frame, matt‑chromed measuring drum
• Ratchet stop for consistent measuring force
• Supplied in transport case
• Suitable for triangular and polygonal workpieces

FAQ

What measuring range does this micrometer cover?
The M309.024 covers a measuring range of 50–65 mm, suitable for micro‑sized inspection tasks within the 10–100 mm classification.

Is the instrument equipped with wear‑resistant faces?
Yes — the micrometer is fitted with carbide measuring faces, designed to withstand abrasive contact and to maintain accuracy over prolonged use.

How fine is the readout on this device?
The analogue readout gives a 0.01 mm resolution, while the instrument’s specified accuracy is ±0.007 mm, supporting high‑precision checks without electronic components.

Does the micrometer include a setting gauge or accessory?
A 50 mm setting gauge is listed as the reference setting value for zero checks and quick verification of the spindle position.

What kind of parts is this micrometer intended for?
The design is optimised for triangular and other polygonal workpieces, where the three‑point contact improves seating and repeatability for outer‑diameter measurements.

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