50-75mm Disc Anvil Micrometer Ø30mm Thimble Chrome Matt, Ratchet, Supplied in Case - Metav IndustryLine

Combine robust construction, a matt‑chromed measuring drum and a ratchet stop for consistent measuring force — ideal for precise, repeatable checks in the workshop. Order the instrument directly via Metav Werkzeuge or contact our consultants for tailored advice.

M309.352 Disc Micrometre (50–75 mm) — 30 mm Measuring Disc, Ratchet Stop — Metav IndustryLine

The M309.352 disc micrometre is a medium‑range measuring screw designed for reliable workshop and inspection use across a 50–75 mm span with a Ø 30 mm measuring disc.

• Robust painted frame
• 30 mm measuring disc for large contact area
• Ratchet stop for reproducible measuring force
• Accuracy 0.005 mm, resolution 0.01 mm

Precision that supports quality control

The instrument delivers a declared accuracy of 0.005 mm combined with a reading of 0.01 mm, which provides a measurable advantage for standard inspection tasks and fine workshop adjustments. Such specification reduces interpretation error during acceptance checks and supports traceable measurement routines. The clear analogue scale and matt‑finished drum aid visibility, while the stated precision assists in maintaining product tolerances and process stability.

Repeatable measurements through controlled measuring force

Equipped with a ratchet stop and a spindle that does not rotate, the micrometre is designed to minimise operator‑induced variation. The ratchet mechanism standardises contact pressure, avoiding over‑tightening, whereas the non‑rotating spindle prevents damage to delicate surfaces and eliminates torsional influences on the measured part. Together these features ensure higher repeatability in batch inspections and daily quality checks.

Durable finishing for workshop environments

A painted frame provides resistance to handling marks and corrosion, while the matt‑chrome measuring drum reduces reflection for easier reading. The Ø 30 mm disc offers a larger contact area than a pointed anvil, making it suitable for slightly uneven or softer surfaces where distribution of measuring pressure is beneficial. At around 0.8 kg, the tool balances solidity with handheld convenience, supporting both bench and portable inspection tasks.

Where this measuring screw adds value

The M309.352 is well suited to mechanical workshops, maintenance departments and small production lines that require reliable dimensional checks within the 50–75 mm range. Its combination of a wide measuring face and controlled spindle action helps when assessing components with shallow profiles or when avoiding surface marking is important. The analogue format keeps operation straightforward while delivering the precision expected in routine quality assurance.

Contact Metav Werkzeuge today to discuss how the Metav IndustryLine M309.352 can be integrated into existing inspection workflows or to request specific delivery information from our Emmerich centre

Technical data

• Article number: M309.352
• GTIN: 4054469118796
• Category: Messschrauben
• Type: analogue

Key figures

• Measuring range: 50–75 mm
• Resolution (reading): 0.01 mm
• Accuracy: 0.005 mm
• Measuring disc diameter: Ø 30 mm
• Weight: 0.8 kg

Materials & features

• Frame painted
• Measuring drum matt chrome‑plated
• Non‑rotating spindle
• Ratchet stop
• Analogue scale

FAQ

What measuring range does this micrometre cover?
The M309.352 covers a measuring span of 50–75 mm, suitable for medium‑range dimensional checks.

What accuracy and resolution can be expected?
This analogue measuring screw offers an accuracy of 0.005 mm with a reading resolution of 0.01 mm.

Why is the ratchet stop important?
The ratchet stop ensures a reproducible measuring force; in the M309.352 it reduces operator variability and protects workpiece surfaces.

What are the measuring faces like?
The instrument features a Ø 30 mm measuring disc, giving a broad contact area that is advantageous on uneven or soft surfaces.

Is the spindle rotating during measurement?
No — the micrometre is equipped with a spindle that does not rotate, which helps prevent surface damage and improves repeatability.

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