20-25mm Three-Point Internal Micrometer Self-Centering, 0.005mm Accuracy, Supplied in Case - Metav IndustryLine

Benefit from precise, repeatable bore measurements thanks to the self‑centring three‑point head, 0.005 mm accuracy and delivery in a protective case; combine fine‑mechanical performance with convenient handling and order the instrument directly via Metav Werkzeuge or consult our specialists for application advice.

Three‑point internal micrometer M836.709 — three‑point internal micrometer, 20–25 mm, 0.005 mm (Metav IndustryLine)

The Three‑point internal micrometer M836.709 is a compact, high‑precision internal measuring instrument intended for fine mechanical and precision engineering tasks, delivering reproducible internal diameter checks in the 20–25 mm range.

• Self‑centring three‑point measuring head
• Measurement range 20–25 mm
• Resolution 0.005 mm precision
• Delivered in protective case

Repeatable high‑precision measurements for small bores

The micrometer’s three‑point, self‑centring measuring head converts contact with the bore into a centred, reproducible reference, reducing runout and eccentricity during measurement. With an indicated accuracy of 0.005 mm, this analogue instrument is suited to demanding inspection tasks where tight tolerances are required; the fine 0.005 mm reading enables confident identification of small deviations without reliance on electronic displays. The mechanical construction minimises sources of electrical failure and simplifies in‑house maintenance while delivering industrial‑grade repeatability.

Micro‑class range for fine mechanics and miniature components

Classified in the Micro range (measuring span up to 100 mm), the 20–25 mm format balances compactness with handling ease, making it particularly useful for watchmaking, miniature assemblies, bearing bores and small hydraulic components. The short span and rigid geometry reduce lever effects and enable steady contact pressure, supporting controlled measurement of delicate parts. Hardened contact faces further protect reference surfaces against wear and help maintain measurement integrity over repeated cycles.

Robust design and protected transport

The device is supplied in a protective case to safeguard the instrument during transport and storage; this is especially relevant for precision tools that must retain calibration and surface condition. Hardened measuring faces preserve contact geometry and extend service life under workshop conditions. The analogue format avoids battery dependency and permits simple visual verification of the spindle position, so routine checks and quick inspections can be carried out without additional equipment.

Clear results, fewer adjustments

The combination of a three‑point contact system and fine graduation delivers clear, interpretable results with minimal handling variation. The self‑centring mechanism reduces the need for multiple alignments and the instrument’s tactile feedback aids controlled contact force. For shops seeking a dependable mechanical solution for internal diameter control, this instrument converts careful technique into consistent measurement outcomes that support quality assurance processes.

For precise internal diameter verification choose the Metav IndustryLine M836.709 — contact Metav Werkzeuge for application guidance and dependable delivery from Emmerich: info@metav-werkzeuge.com / +49 2822 7131930

Technical data

• Article number: M836.709
• GTIN: 4061905041433
• Brand: Metav IndustryLine

Core specifications

• Measuring range: 20–25 mm
• Measurement accuracy: 0.005 mm
• Reading / graduation: 0.005 mm
• Type: Mechanical analogue

Special features

• Self‑centring three‑point measuring head
• Hardened measuring faces
• Delivered in protective case
• Category: internal micrometers (Messschrauben)

FAQ

What size of bores is this instrument intended for?
The Three‑point internal micrometer M836.709 is specified for internal diameters in the 20–25 mm range and is therefore suited to small‑bore inspection tasks.

How precise are the measurements taken with this micrometer?
Measurements are taken with an indicated accuracy of 0.005 mm; the three‑point, self‑centring head improves repeatability for internal diameter checks.

Is the micrometer ready for immediate use upon delivery?
The instrument is delivered in a protective case and includes hardened measuring faces; basic inspection and familiarisation are recommended before first use.

Can this instrument be used in a production environment?
Yes — the robust mechanical design and three‑point centring make the instrument suitable for routine checks in workshop and production settings where compact, repeatable internal measurement is required.

Which advantages does the self‑centring principle offer?
Self‑centring contact converts the three individual contact points into a reproducible central datum, reducing eccentricity and the need for repeated alignment during bore measurement.

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