150 mm Three-Point Extension 16 mm Bore For 20–25/25–30 mm Internal Measuring Screws - Metav IndustryLine

Take advantage of a compact, purpose-built extension that increases the reach of three‑point internal measuring instruments while retaining mounting security and repeatable alignment; the 150 mm, Ø16 mm shank and M10 thread ensure stable extension and straightforward integration with existing metrology fixtures. Order the accessory directly via Metav Werkzeuge or consult the Metav team for application advice.

Extension for three‑point internal micrometers — 150 mm, Ø16 mm (Metav IndustryLine)

A precision extension for a three‑point internal measuring instrument, designed to extend usable range to 150 mm with a Ø16 mm shank and secure M10 thread for reliable internal measurements

• 150 mm extension, Ø16 mm shank
• Compatible with 20–30 mm three‑point internal micrometers
• M10 thread for secure mounting

Secure reach for internal measurements

This extension provides a 150 mm working length with a Ø16 mm shank, engineered to extend the reach of three‑point internal measuring instruments without compromising stability. The combination of length and diameter maintains column stiffness to reduce deflection during insertion, resulting in more repeatable internal measurements in bore and cavity applications. The M10 mounting enables a positive mechanical connection that minimises the risk of movement between measurements, supporting consistent inspection routines.

Plug‑and‑play integration with existing systems

Fitted with a standard M10 thread, the extension integrates directly with compatible three‑point internal measuring fixtures and carriers. This straightforward interface shortens setup time and reduces the need for bespoke adaptors, improving uptime on calibration and inspection benches. The accessory is categorised as a metrology spare part, so it can be added to existing toolsets to increase measuring range without replacing the primary instrument, delivering an efficient upgrade path for workshop metrology.

Designed for precision workshops and production lines

Classified for small‑range internal work (suitable for measuring ranges around 20–30 mm), the extension is ideal where compact, accurate measurement is required—such as component inspection in precision engineering or quality control in small‑batch production. By increasing reach while retaining alignment fidelity, the accessory supports reliable dimensional control across serial inspections, reducing rework and improving throughput. The design emphasises mechanical stability to help maintain measurement integrity under repeated handling.

Practical specification and handling benefits

The extension is lightweight yet robust at 1.3 kg, which facilitates handling and positioning in confined bores while still providing a solid feel during mounting. Numeric identifiers and classification values are provided in the technical data below to assist in procurement and inventory management. Where traceable measurement chains are needed, the accessory can be recorded as part of the instrument set to maintain documentation and inspection routines.

For tailored advice on fitting the Metav IndustryLine extension and to check compatibility with existing three‑point internal micrometers, contact Metav Werkzeuge in Emmerich: info@metav-werkzeuge.com or +49 2822 7131930 — Metav’s consultants will advise on the optimal setup for workshop or production requirements

Technical data

• Article number: M312.105
• GTIN: 4054469119366
• Weight: 1.3 kg
• Thread: M10
• Label: Extension for three‑point internal measuring instrument, 150 mm, Ø16 mm

Core specifications

• Length: 150 mm
• Shank diameter: Ø16 mm
• Compatible measuring ranges: 20–25 mm, 25–30 mm
• Tariff number: 90173000
• eClass: 21019104
• ETIM: EC002219

Compatibility & features

• Accessory for three‑point internal measuring instruments
• Extension type: 150 × Ø16
• Category: Accessories — measuring equipment
• Manufacturer brand: Metav IndustryLine

FAQ

How is the extension secured to a three‑point internal measuring instrument?
The extension uses an M10 thread for secure mechanical mounting; this ensures positive engagement and stable alignment with the host three‑point internal measuring instrument.

Which measuring ranges does the extension support?
The accessory is intended for instruments with internal measuring ranges around 20–25 mm and 25–30 mm, effectively extending reach while preserving measurement stability.

Will using the extension affect measurement repeatability?
When mounted correctly via the M10 thread and handled with consistent technique, the extension maintains high repeatability by reducing deflection through its Ø16 mm shank and optimised length.

Is the extension suitable for serial inspection in a production environment?
Yes; the extension is designed to be a robust accessory that increases usable range without replacing primary instruments, supporting efficient serial inspection and inline quality checks.

Can the extension be used with different brands of three‑point internal micrometers?
Compatibility depends on the instrument’s mounting interface; the M10 thread is a common mechanical standard, but fitment should be confirmed against the specific instrument connection before use.

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