125-150mm Three-Point Dial Micrometer With 30mm Anvil, Ratchet, Painted Frame, Matt Chrome Dial, Supplied In Case - Metav IndustryLine

Take advantage of precise mechanical measuring with consistent contact force and robust datum surfaces: the micrometer’s ±0.006 mm accuracy and 0.01 mm resolution deliver reliable size control across the shop, while the ratchet stop and non‑rotating spindle ensure repeatable readings. Order directly via Metav Werkzeuge or consult the specialists for application advice.

Micrometer M309.255 – Disc‑face micrometer, 125–150 mm, Ø30 mm anvils (Metav IndustryLine)

The Micrometer M309.255 is a standard‑range disc‑face micrometer designed for workshop dimensional checks and production quality control, offering a stable contact area and consistent measuring force for medium‑sized components.

• Standard range 125–150 mm
• Ø30 mm disc measuring faces
• Non‑rotating spindle with ratchet stop
• Supplied in transport box

Precision where repeatability matters

This analogue micrometer combines a fine 0.01 mm graduation with a verified ±0.006 mm accuracy to support controlled tolerance checks in machining and inspection. The combination of a non‑rotating spindle and a ratchet stop reduces measurement scatter caused by variable hand pressure, producing more reproducible values across repeated checks. The sizeable Ø30 mm disc measuring faces spread contact pressure and provide a stable datum on flat or lightly contoured workpieces, which helps when verifying critical diameters or faces.

Designed for reliable handling and consistent results

A painted frame gives the gauge robust protection against workshop wear while the matt‑chromed thimble improves legibility under bright lights. The ratchet mechanism limits the applied measuring force, which safeguards delicate parts and reduces operator influence on readings. As an analogue instrument with a clear mechanical drum, this device lends itself to fast spot checks without the need for batteries, supporting rapid throughput in production or incoming inspection tasks.

Integrating into standard workshop workflows

Classified as a standard‑range instrument (125–150 mm), this micrometer is sized to cover the typical needs of machine shops, tool rooms and quality control benches where reach and stiffness must be balanced. Supplied in a transport box, it arrives ready for secure storage and safe transfer between workstations or to the inspection bench. The construction and measuring specification make it suitable for routine dimensional control of components within its range, supporting process stability and traceable measurement routines.

Contact Metav Werkzeuge for tailored advice on integrating the M309.255 into inspection routines and for delivery from Emmerich to your workshop

Technical data

• SKU: M309.255
• GTIN: 4054469118741
• Measuring range: 125–150 mm
• Resolution: 0.01 mm
• Accuracy: ±0.006 mm
• Weight: 1.6 kg
• Display type: Analogue
• Ratchet stop: Yes
• Spindle: Non‑rotating
• Measuring faces: Ø30 mm disc
• Frame finish: Painted
• Thimble finish: Matt chrome

Numbers / Core technical data

• Measuring range min: 125 mm
• Measuring range max: 150 mm
• Resolution (graduation): 0.01 mm
• Stated accuracy: ±0.006 mm
• Weight: 1.6 kg
• Tariff code: 90173000

Special features

• Disc‑shaped measuring faces for stable contact
• Ratchet stop for consistent measuring force
• Non‑rotating spindle to protect measured surfaces
• Painted frame for workshop durability
• Matt‑chromed thimble for improved readability
• Supplied in transport box for safe storage and transfer

FAQ

What is the measuring range of this micrometer?
The measuring range is 125–150 mm for the Micrometer M309.255, classified as a standard‑range instrument suitable for typical machine‑shop tasks.

What resolution and accuracy can be expected?
Resolution is 0.01 mm and the micrometer achieves an accuracy of ±0.006 mm, which supports precise dimensional checks in production and inspection.

How does the ratchet stop influence measurement results?
The ratchet stop on the Micrometer M309.255 limits the applied measuring force, promoting repeatable contact pressure and reducing operator‑induced variation between measurements.

Are the measuring faces suitable for flat and slightly curved surfaces?
Yes, the Ø30 mm disc measuring faces provide a stable contact area that is well suited to flat surfaces and light contours, improving repeatability compared with smaller anvils.

Is the spindle rotating during measurement?
No, the spindle is non‑rotating, which prevents surface marking and helps maintain consistent contact geometry during sizing operations.

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