30mm Dial Gauge Insert Flat M2.5 Steel, For Test Indicators - Käfer Messuhrenfabrik GmbH & Co. KG

Take advantage of the precise fit, robust steel construction and standard Ø 30 mm size to streamline dial-indicator mounting; order the measuring insert directly via Metav Werkzeuge or consult our specialists for compatibility advice.

Measuring insert D 30 mm, flat, M2.5 — steel dial-gauge accessory (KÄFER)

Measuring insert D 30 mm, flat, M2.5 — steel dial-gauge accessory (KÄFER) is a compact steel measuring insert engineered for mounting to dial indicators in workshop metrology, offering a reliable contact surface and standardised attachment.

• Flat 30 mm diameter for dial indicators
• Steel construction for workshop durability
• M2.5 mounting thread for secure attachment
• Single-piece measuring insert, ready to fit

Precise mounting to keep inspection consistent

The flat measuring insert provides a standardised contact surface that reduces variability when mounting dial indicators. Machined to a Ø 30 mm tolerance, the component ensures repeatable positioning and easier comparison of measurements across workpieces. The incorporated M2.5 thread secures the insert to typical indicator stems, translating into less time spent on alignment and fewer measurement errors. For professionals who rely on reproducible readings, this accessory supports steady inspection routines and predictable quality control results.

Robust steel construction for everyday workshop use

Manufactured in steel, the insert withstands the knocks and handling of a busy shop while maintaining surface integrity for accurate contact with measuring probes. The material choice supports longevity under repeated use and cleaning, and the flat form minimises wobble during measurement. Where occasional thermal changes or coolant contact occur, the resilient steel body sustains dimensional stability better than softer materials. This makes the part particularly suitable for machinists, toolmakers and inspection technicians who need dependable, long-term performance from small metrology components.

Simple integration with dial gauges and inspection setups

Designed as an accessory for standard dial gauges, the insert fits common mounting geometries and simplifies retrofit tasks. Its plain flat face aids in creating a defined datum for lay testing, feeler-contact checks and comparative probing. For users less familiar with metrology terms: the M2.5 designation refers to the thread size used to attach the insert; Ø 30 mm denotes the nominal diameter of the contact face. Installation is straightforward and requires basic workshop tools, enabling quick adaptation into existing measurement benches or portable gauge setups without specialist modification.

Contact Metav Werkzeuge for delivery and technical guidance on fitting this KÄFER measuring insert — Metav Werkzeuge offers expert advice from Emmerich and can confirm compatibility with specific dial indicators via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 4000851637NW
• Label: Messeins.D.30mm plan M2,5 STA z.Messuhren KÄFER
• Product type: Measuring insert
• Manufacturer: Käfer Messuhrenfabrik GmbH & Co. KG

Facts

• Diameter: Ø 30 mm
• Thread: M2.5
• Packaging unit: 1

Special features

• Material: Steel
• Form: Flat (plan)
• Application: For dial indicators

FAQ

What is the nominal diameter of the insert?
The insert has a nominal diameter of Ø 30 mm, suitable for standard dial-indicator contact faces.

Which thread is used to mount the insert?
Mounting is by M2.5 thread, compatible with typical dial-gauge stems and accessory adaptors.

Is the insert suitable for heavy-duty workshop conditions?
Yes, the steel construction of the insert offers robustness for regular workshop handling and retains its contact surface under normal use.

Can this insert be fitted to any dial indicator?
The insert is designed for standard indicator mounting geometries; compatibility can be confirmed using the SKU 4000851637NW and checking the indicator stem thread and adaptor requirements.

How does the flat form affect measurement reliability?
A flat contact face provides a defined and repeatable datum, improving the consistency of comparative and contact-based measurements.

Manufacturer: Käfer Messuhrenfabrik GmbH & Co. KG; Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com