12–20mm Three-Point Interior Micrometer Set 0.001mm Resolution With Setting Ring And 150×Ø11.8 Extension, In Case - Metav IndustryLine

Robust three‑point internal measuring set with 0.001 mm reading and ±0.005 mm repeatability delivers precise inspection of blind bores; the compact 12–20 mm range and included setting ring plus extension streamline bench checks. Order the set directly via Metav Werkzeuge or consult our specialists for tailored application advice.

Three‑Point Internal Micrometer Set M312.485 — 12–20 mm, 0.001 mm resolution (Metav IndustryLine)

The Three‑Point Internal Micrometer Set M312.485 provides high‑resolution internal measurements for blind‑hole inspection and fine mechanical work, suitable where compact reach and repeatable results are essential.

• 0.001 mm reading resolution
• Range 12–20 mm for blind bores
• Accuracy ±0.005 mm for repeatable results
• Includes 16 mm setting ring and extension

Exceptional precision for blind‑hole measurement

The three‑point measuring principle converts radial contact into a centralised reading, producing stable values even in shallow blind bores. With a nominal resolution of 0.001 mm and a documented accuracy of ±0.005 mm, this internal micrometer set supports precise quality checks and reduces rework. The instrument’s geometry minimises eccentricity during measurement, which helps to secure reproducible results across short production runs and sample testing.

Compact design that aids handling and visibility

Designed within the Micro range (12–20 mm), the set fits tight cavities and is tailored for fine mechanical and precision engineering tasks. A matt‑chrome scale and vernier reduce glare and improve contrast for fast reading, while the compact construction keeps the device rigid under hand pressure. Hardened measuring faces ensure wear resistance and long service life, so the instrument maintains its calibration window longer under routine use.

Practical features for workshop repeatability

A 16 mm setting ring is supplied to calibrate the baseline quickly before measurement series, and the included 150 × Ø11.8 extension provides added reach for deeper blind holes without sacrificing stability. The set format consolidates essential sizes for frequent bore checks and trimming operations, making it a pragmatic addition to inspection benches and small series production lines where fast, verifiable checks are needed.

Suited applications and traceability

Engineered for blind‑hole bores, this set is useful in toolmaking, small‑component inspection and assembly work where internal diameters must be verified quickly and reliably. The compact measuring range and high resolution mean it is particularly suitable for watchmaking, connector components and precision housings. The set’s repeatability supports consistent quality documentation in standard workshop QA routines.

For accurate bore inspection and to discuss how the M312.485 set aligns with specific measurement requirements, contact Metav Werkzeuge for expert advice and ordering assistance.

Technical data

• Article number: M312.485
• GTIN: 4054469182261
• Weight: 1.3 kg
• Set: yes

Core measurements

• Measuring range: 12–20 mm
• Resolution (reading): 0.001 mm
• Accuracy: ±0.005 mm
• Pieces per set: 2

Materials & special features

• Scale and vernier: matt‑chrome plated
• Hardened measuring faces
• Setting ring: 16 mm
• Extension: 150 × Ø11.8
• Suitable for blind‑hole measurements

FAQ

What measurement range does the set cover?
The set covers the 12–20 mm internal diameter range, designed for compact blind‑hole checks and fine mechanical components.

What resolution and accuracy can be expected?
Resolution is 0.001 mm and stated repeatability is ±0.005 mm, ensuring high‑precision readings for routine inspection.

Which components are included with the set?
The kit includes two measuring elements, a 16 mm setting ring and a 150 × Ø11.8 extension for extended reach.

Are the measuring faces durable for workshop use?
Yes, the measuring faces are hardened to resist wear and preserve measurement stability under regular use.

Is this set suitable for very small precision parts like watch components?
Yes; the compact Micro‑range and high resolution make it appropriate for watchmaking and other fine mechanical applications.

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