65-80mm Three-Point Outside Micrometer 0.01mm Readout Carbide Faces Ratchet, Supplied in Case - Metav IndustryLine

Take advantage of precise three‑point diameter measurement, robust carbide measuring faces and a ratchet stop for consistent measuring force; order directly via Metav Werkzeuge or ask our consultants for application advice.

Metav IndustryLine M309.025 — 3‑Point External Micrometer, 65–80 mm, 0.01 mm Graduation

The M309.025 is a mechanical three‑point external micrometer designed for precise diameter checks of triangular profiles and similar polygonal components in workshop and inspection environments.

• 65–80 mm three‑point measuring range
• 0.01 mm graduation, ±0.007 mm accuracy
• Carbide measuring faces and ratchet stop

Accurate geometry checks for polygonal parts

Three‑point measuring systems deliver repeatable results where standard anvil‑to‑spindle checks struggle. The three‑point measurement averages the contact positions across the flat or corner faces, making it ideal for triangular profiles and other polygonal cross‑sections where a single pair of anvils would rock or misread. With a 65–80 mm range and a fine 0.01 mm graduation, the instrument supports close tolerance work; the stated performance of ±0.007 mm positions it above ordinary mechanical gauges for demanding production and inspection tasks.

Built for everyday workshop use and longevity

Durability and ease of handling reduce downtime and measurement variation. The frame is lacquered for corrosion protection while the measuring drum is matt‑chrome plated for glare‑free reading and smooth operation. Carbide measuring faces resist wear from repeated contact with hard materials, retaining dimensional integrity over long service intervals. A ratchet stop ensures a consistent contact pressure, which helps to eliminate operator‑induced variation and improves reproducibility during batch inspection.

Simple mechanical reading, reliable results

This is an analogue instrument with a conventional thimble graduation that is intuitive to use in a production environment; the clear 0.01 mm scale speeds routine checks without the need for batteries or electronics. The combination of mechanical simplicity and hardened contact faces means the device is suitable for shop floor quality control as well as assembly‑line monitoring—providing consistent results with minimal maintenance. For operations that value fast, robust checks of polygonal shafts or components, the three‑point micrometer provides a focused, reliable measurement solution.

Choose the Metav IndustryLine M309.025 for dependable three‑point diameter checks and contact Metav Werkzeuge for personalised application advice or to place an order

Technical Data

• SKU: M309.025
• GTIN: 4054469117607
• Eclass: 21170328
• ETIM: EC003590
• Customs tariff number: 90173000

Core specifications

• Measuring range: 65–80 mm
• Graduation / resolution: 0.01 mm
• Stated accuracy: ±0.007 mm
• Setting size: 65 mm
• Display type: Analogue (mechanical)

Features and materials

• Carbide measuring faces
• Lacquered frame; matt‑chrome measuring drum
• Ratchet stop for consistent measuring force
• Suitable for triangular workpieces
• Category: Micrometers (Messschrauben)

FAQ

What shapes of workpieces is this micrometer best for?
The Metav IndustryLine M309.025 is optimised for triangular profiles and similar polygonal sections where three‑point contact gives a stable, averaged diameter reading.

What resolution and accuracy can be expected from this device?
The instrument provides a 0.01 mm graduation with a stated accuracy of ±0.007 mm, suitable for demanding shop and inspection tasks.

Are the measuring faces durable for long production runs?
Yes, the M309.025 uses carbide measuring faces, which offer superior wear resistance and maintain measuring integrity over extended use.

How does the ratchet stop improve measurement reliability?
The integrated ratchet stop ensures a repeatable contact pressure at each measurement, reducing operator variation and supporting consistent results with the mechanical thimble.

How does three‑point measurement differ from standard micrometer checks?
Three‑point measurement averages three contact points around the workpiece circumference, preventing rocking on flats or corners and producing a more representative diameter for polygonal components.

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