20-50mm Three-Point Internal Measuring Pistol Set With Four Interchangeable Heads, Bluetooth Digital Display - Metav IndustryLine

Take advantage of the precise three‑point contact measurement together with Bluetooth data transfer for faster, more reliable internal inspections; the compact, pistol‑style design plus hardened measuring faces ensures repeatable results across the full 20–50 mm range. Order the set directly via Metav Werkzeuge or contact our consultants for application advice.

Pistol-style 3‑point internal micrometer set M312.326.O — Digital, 20–50 mm with Bluetooth

The Pistol-style 3‑point internal micrometer set is a compact, pistol‑grip gauge designed for accurate internal diameters and blind‑hole checks in component inspection and small‑batch production.

• Three‑point internal contact measuring
• Measuring range 20–50 mm
• Digital readout with mm/inch and hold
• Bluetooth data output for traceability

Accurate internal checks with three‑point contact

The pistol‑style instrument uses a three‑point measurement principle to centre itself automatically in bores, producing more consistent readings than single‑point probes. With a measuring range of 20–50 mm and a stated accuracy of ±0.004 mm, the device suits quality control tasks where repeatability matters. The mechanism's design minimises tilting and off‑axis error, so the gauge is appropriate for component inspection in machine shops and contract measurement environments. The set format provides four interchangeable heads that adapt to sub‑ranges, reducing the need for multiple single‑purpose tools.

Fast data capture and seamless traceability

A digital display offers clear readout with unit selection (mm/inch), HOLD and mode functions, while an integrated Bluetooth output enables wireless transfer of measurement data to inspection software or tablets. The instrument records fine increments thanks to a 0.001 mm display resolution and stores transient values via the HOLD control for stable data collection. This combination of digital convenience and wireless connectivity reduces transcription errors and supports shop‑floor traceability workflows.

Robust build for everyday workshop use

Built for the rigours of a production environment, the gauge features hardened measuring faces that resist wear and maintain accuracy over prolonged use. The pistol housing balances handheld ergonomics with structural stiffness, and the instrument's 2.39 kg mass gives a reassuring feel that aids steady handling during repetitive checks. The set is supplied without ring or extension but includes the 4 interchangeable measuring heads, enabling rapid adaptation to different bore depths and diameters within the 20–50 mm span.

Designed for blind‑hole and cavity measurement tasks

The set is expressly suitable for blind‑hole measurement, offering access and centring where through‑hole gauges cannot be used. Each head is shaped to align the contact points reliably inside recesses and stepped bores, so the system can replace slower, multiple‑step measuring routines. For inspection teams that require quick verification of assembly bores, this pistol‑style gauge speeds up throughput while preserving the ±0.004 mm performance expected in precision work.

Request the M312.326.O set from Metav Werkzeuge for a practical, connected solution to internal diameter inspection or consult our specialists at Metav Werkzeuge for guidance on integrating the gauge into existing QC processes

Technical data

• Article number: M312.326.O
• GTIN: 4054469178486
• Category: Micrometers

Core data

• Measuring range: 20–50 mm
• Partial measuring ranges: 20–25, 25–30, 30–40, 40–50 mm
• Accuracy: ±0.004 mm
• Resolution: 0.001 mm
• Weight: 2.39 kg

Design & features

• Digital display with ON/OFF/SET, HOLD, mm/inch/Mode
• Bluetooth data output
• Includes 4 measuring heads
• Hardened measuring faces
• Suitable for blind‑hole measurement
• Supplied as a set; no ring or extension included

FAQ

What measurement accuracy can be expected?
The instrument delivers an accuracy of ±0.004 mm, making it suitable for precise internal diameter checks within the 20–50 mm range of the Pistol‑style 3‑point internal micrometer set M312.326.O.

Can blind holes be measured with this set?
Yes — the set is designed for blind‑hole measurement, with heads configured to reach and centre reliably inside recesses and stepped bores.

How is measurement data transmitted?
Measurement values can be read on the digital display or transmitted wirelessly via Bluetooth for direct import into inspection software or data collection apps.

Which accessories are included with the set?
The delivery includes the pistol gauge and 4 interchangeable measuring heads; a ring and extension are not supplied.

Is the gauge suitable for workshop use and repetitive checks?
Yes — hardened measuring faces and a robust pistol‑style housing make the set durable for shop‑floor inspections and repetitive measurement routines.

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