75–100mm Three-Point Disc Micrometer Ø30mm Disc, Painted Frame, Matt Chrome Drum, Ratchet, Boxed - Metav IndustryLine

Take advantage of a compact disc micrometre that combines a practical 75–100 mm measuring range with a fine accuracy of ±0.005 mm and a ratchet stop for repeatable contact force — supplied ready for safe transport in a protective case. Order directly via Metav Werkzeuge or consult their specialists for procurement and technical advice.

Disc micrometre M309.353 — Analog micrometre, 75–100 mm, Ø30 mm disc

The Disc micrometre M309.353 is an analog workshop micrometre designed for precise linear measurements in metalworking and mechanical assembly, offering a standard-range solution for routine and quality-control tasks.

• Measuring range 75–100 mm
• Ø30 mm disc measuring faces
• Accuracy ±0.005 mm
• Ratchet stop for consistent measuring force

Consistent repeatability for workshop measuring routines

The micrometre is built around a proven mechanical design that prioritises repeatable measurements in production and inspection. The integrated ratchet stop limits applied torque, reducing operator-induced variation and supporting reproducible contact pressure. With an accuracy of ±0.005 mm (5 µm), the instrument meets tighter workshop tolerances than common industrial nonius gauges, making it well suited for demanding fits and precision assemblies while remaining straightforward to read and interpret.

Disc measuring faces for delicate and curved surfaces

Equipped with Ø30 mm disc measuring faces, this model spreads contact pressure over a larger area compared with point anvils. That geometry helps to avoid local indentations when measuring softer materials or parts with slight curvature, and it improves alignment on short contact paths. The non-rotating spindle protects the workpiece surface during measurement and reduces the risk of scoring, which supports serviceable longevity of both the instrument and sensitive components.

Robust finish and ergonomic handling for daily use

The frame is lacquered for corrosion resistance and the thimble is matt-chrome plated to reduce glare and provide a durable, tactile surface for adjustment. At approximately 1.1 kg the tool offers a solid feel that aids stable handling without being cumbersome. The analogue scale keeps the instrument simple to operate, with familiar mechanical feedback that many machinists and inspectors prefer for quick checks and bench use.

Integration into the workshop and transport-ready delivery

Classified in the Standard range (maximum 100 mm), this micrometre complements 150/200/300 mm base tools commonly used in mechanical workshops, providing an efficient balance of reach and stiffness. The instrument is supplied in a protective transport case to safeguard the measuring faces and mechanism during storage and transit. Its straightforward mechanical design makes maintenance straightforward and ensures long service life when handled correctly.

Choose Metav IndustryLine's disc micrometre M309.353 for reliable 5 µm accuracy and workshop-proven repeatability — contact Metav Werkzeuge for ordering and specialist advice from Emmerich.

Technical data

• Article number: M309.353
• GTIN: 4054469118802
• Category: Messschrauben (micrometres)
• Label: Teller-Mess, ND, 75 - 100 mm, Ø 30 mm Teller

Facts

• Measuring range: 75–100 mm
• Accuracy: ±0.005 mm
• Disc diameter: Ø 30 mm
• Weight: 1.1 kg
• Reading: analog (mechanical)

Special features

• Lacquered frame
• Matt-chrome thimble
• Ratchet stop
• Non-rotating spindle
• Delivered in a transport case
• Suitable for workshop and inspection use

FAQ

What measuring range does the micrometre cover?
The Disc micrometre M309.353 covers a 75–100 mm range, placing it in the standard workshop class for medium‑sized components.

How precise is the instrument for quality-control tasks?
The instrument offers an accuracy of ±0.005 mm, which is suitable for fine mechanical assemblies and reproducible inspection steps.

Are the measuring faces suitable for delicate surfaces?
Yes, the Ø30 mm disc measuring faces distribute contact pressure and, together with the non-rotating spindle, reduce the risk of surface marking on softer materials.

Does the micrometre provide consistent contact pressure?
The built-in ratchet stop ensures repeatable measuring force, improving measurement consistency across operators and cycles.

Is the instrument supplied ready for transport?
The micrometre is supplied in a protective transport case, which secures the instrument for storage and movement between workstations.

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