25-50mm Groove Measuring Bore Gauge With Friction Ratchet, 0.01mm Graduation, Supplied In Case - Metav IndustryLine

Taking advantage of a compact analogue micrometer with a 25–50 mm measuring range and ±0.005 mm accuracy ensures precise groove measurements with reproducible results; combined with a friction ratchet and a non-rotating spindle, the instrument delivers consistent contact force and reduced surface marking—order or request advice via Metav Werkzeuge for application support.

M307.022 – Analogue micrometer for groove measurement, 25–50 mm, ±0.005 mm

M307.022 is a precision analogue micrometer designed for reliable groove and slot measurement in fine mechanical and micro-assembly applications, combining a compact form factor with workshop-grade repeatability.

Analogue readout with 0.01 mm graduation Accuracy rated at ±0.005 mm Friction ratchet for uniform measuring force Supplied in a protective transport case

Precision where small differences count

This analogue micrometer places emphasis on measurement accuracy and repeatability. The instrument’s measuring range of 25–50 mm and its fine reading of 0.01 mm permit confident sizing of grooves and slots in small components. The stated accuracy of ±0.005 mm positions this gauge for demanding inspection tasks where tolerances are tight; the specification supports process control in precision workshops and small-batch production. The compact design corresponds to the micro-class range, making it particularly suited to fine mechanical and watchmaking tasks.

Design features that improve repeatability

Built to reduce operator-related variation, the micrometer includes a friction ratchet and a non-rotating spindle, which together ensure consistent contact force and prevent surface damage when measuring delicate parts. The spindle pitch of 0.5 mm gives predictable advance per turn, while the measuring faces 0.75 x 6.5 mm concentrate the contact area for access into narrow grooves. These mechanical decisions translate into fewer re-measures and a higher first-pass acceptance rate on small assemblies.

Robustness and workshop usability

The instrument is an analogue micrometer with a classic frame and hardened measuring surfaces; its mechanical simplicity supports long service intervals and straightforward maintenance. Delivery in a protective transport case safeguards calibration and geometry during storage and transit. The clear mechanical scale and tactile ratchet make the gauge easy to handle on the bench or in the inspection bay, while the stout frame minimises twist under normal use, preserving measurement integrity.

Application focus and suitability

Engineered for groove and slot measurement, this micrometer is particularly effective in applications where compact form and high precision are required: micromechanics, small tooling, and precision fixturing. The combination of fine resolution, a controlled contact mechanism and small measuring faces makes the instrument well matched to tasks where access and surface preservation are important. For traceable or accredited calibration needs, specifications should be checked before procurement.

Contact Metav Werkzeuge for tailored application advice and to arrange supply of the M307.022 analogue micrometer from Metav IndustryLine

Technical data

• Article number: M307.022
• GTIN: 4054469117270
• Eclass: 21170328
• ETIM: EC003590
• Tariff code: 90173000

Facts

• Measuring range: 25–50 mm
• Reading (graduation): 0.01 mm
• Accuracy: ±0.005 mm
• Spindle pitch: 0.5 mm
• Measuring faces: 0.75 x 6.5 mm

Special features

• Analogue micrometer for groove measurement
• Friction ratchet for consistent measuring force
• Non-rotating spindle to protect surfaces
• Supplied in protective transport case
• Analogue mechanical scale

FAQ

What is the measuring range of this micrometer?
The M307.022 micrometer covers a measuring range of 25–50 mm.

What resolution and accuracy does the instrument offer?
The micrometer has a reading of 0.01 mm and an accuracy of ±0.005 mm.

Does the micrometer include a friction ratchet and non-rotating spindle?
Yes, the M307.022 features a friction ratchet and a non-rotating spindle to ensure repeatable contact and to minimise marking of measured surfaces.

Is the instrument supplied ready for transport?
The micrometer is supplied in a protective case for safe transport and storage.

Is accredited ISO 17025 calibration included?
No ISO 17025 accreditation is indicated for this item in the product data.

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