12–20 mm Digital Three-Point Bore Gauge, Rotating 330° Display, RB6 & Bluetooth Output, 0.001 mm Resolution, Supplied Calibrated in Case - Metav IndustryLine

Take advantage of fast, repeatable blind‑hole checks with a digital three‑point system that combines clear readings, a 330° rotatable display and seamless data transfer; the compact 12–20 mm range suits fine mechanical work while the 0.005 mm accuracy ensures reliable pass/fail decisions. Order the instrument directly via Metav Werkzeuge or ask the consultants for application advice.

Digital three‑point internal quick measuring instrument M312.345 — 12–20 mm, 0.005 mm accuracy (Metav IndustryLine)

The Digital three‑point internal quick measuring instrument M312.345 is a pistol‑style gauge for rapid, repeatable measurement of blind‑hole diameters in workshops and quality‑control stations.

• 12–20 mm quick internal measurement
• 0.005 mm high measurement accuracy
• RB6 and Bluetooth data output

Rapid, centred internal measurement for compact components

The instrument uses a three‑point contact system that stabilises the probe automatically and centres measurements, so blind‑hole diameters are captured quickly and repeatably. With a measuring span of 12–20 mm, this device falls into the micro class of calipers and micrometers designed for fine mechanical tasks such as small bores, watch components and precision fixtures. The pistol‑style layout accelerates routine checks on production lines and in inspection benches, reducing cycle time without compromising on measurement quality.

Traceable precision and clear numeric feedback

Measurement accuracy of 0.005 mm combined with a reading increment of 0.001 mm separates display resolution from overall uncertainty: the fine display allows confident adjustment and trend observation, while the stated accuracy defines the reproducible tolerance band for process acceptance. The electronic display offers standard metrology controls (ON/OFF/SET, CAL, INC, PRESET, HOLD, mm/inch and TOL) for straightforward setup and tolerance checks. Power is supplied by a single 3 V CR 2032 battery for compact reliability during shop use.

Integrated data transfer and ergonomic operation

Data transfer is supported via RB6 and Bluetooth, enabling direct logging to test systems or tablets and reducing manual transcription errors during batch inspection. The display rotates 330° for easy readout in confined setups or when the gauge is used on fixtures, and the pistol form-factor improves handling during repeated measurements. The package weight supports comfortable operation during shift work, with the set configuration streamlining inspection of multiple features.

Ready for workshop measurement and process control

Delivered as a set, the kit contains two digital pistol‑style three‑point quick measuring instruments with the corresponding measuring heads for the ranges 12–16 mm and 16–20 mm; a setting ring and any extension pieces are not included. The design suits use in machine shops, toolrooms and quality departments where blind‑hole diameters must be controlled frequently and documented efficiently. Integration into data workflows via Bluetooth or RB6 supports traceable production control and rapid decision making.

Secure the Metav IndustryLine M312.345 for faster blind‑hole inspections — contact Metav Werkzeuge in Emmerich on +49 2822 7131930 or info@metav-werkzeuge.com to discuss application fit or request a quote.

Technical data

• Article number: M312.345
• GTIN: 4054469181677
• Content: 2× digital pistol three‑point quick measuring instrument (setting ring and extension not included)
• Number per set: 2

Core figures

• Measurement range: 12–20 mm
• Sub ranges: 12–16 mm, 16–20 mm
• Accuracy: 0.005 mm
• Reading increment: 0.001 mm
• Weight: 1.71 kg
• Battery: 3 V CR 2032

Special features

• Digital display with ON/OFF/SET, CAL, INC, PRESET, HOLD, mm/inch and TOL functions
• Data output: RB6 and Bluetooth
• Display rotatable by 330°
• Suitable for blind‑hole measurements

FAQ

How does the three‑point system improve internal measurements?
The three‑point geometry used by the M312.345 distributes contact forces and centres the probe automatically, improving repeatability and reducing eccentricity errors when measuring blind holes.

What accuracy and display resolution can be expected?
The instrument provides an accuracy of 0.005 mm with a display increment of 0.001 mm, so readings are fine‑grained while the stated uncertainty guides acceptance criteria.

Is data logging possible with this measuring device?
Yes; the gauge supports both RB6 and Bluetooth data output for direct capture into inspection software or handheld devices.

What is included in the set delivery?
Delivery comprises two digital pistol‑style three‑point quick measuring instruments with the corresponding measuring heads for the 12–16 mm and 16–20 mm ranges; a setting ring and any extension are not included.

Is the M312.345 suitable for production line checks?
Designed for rapid, repeatable blind‑hole checks and with integrated data output, the M312.345 is suitable for high‑throughput inspection stations and quality‑control benches.

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