50-100mm Three-Point Internal Micrometer Set 0.001mm Resolution With Setting Ring And Extension, In Case - Metav IndustryLine

Benefit from a purpose-built combination of high-resolution three-point contact and adjustable extensions to inspect blind holes with confidence; the set supports reproducible internal measurements and workshop durability. Order the set directly via Metav Werkzeuge or request guidance from our consultants for application-specific advice.

Three-point internal micrometer set M312.487 — 50–100 mm, 0.001 mm resolution (Metav IndustryLine)

A three-point internal micrometer set designed for precise measurement of blind holes and internal diameters in workshop and quality‑control environments, supplied complete with setting ring and extension in a protective case.

• Three-point contact for stable internal readings
• Resolution 0.001 mm for submicron sensitivity
• Range 50–100 mm ideal for micro-range work
• Includes setting ring and extension for blind holes

Precision where internal diameters count

The three-point contact geometry converts a fragile measurement task into a repeatable process: the three anvils centre automatically in the bore, reducing alignment errors and enabling consistent readings. With a resolution of 0.001 mm and a stated accuracy of ±0.005 mm, this instrument is aimed at fine mechanical work where small deviations matter. The set covers 50–100 mm, placing it in the micro range (10–100 mm) category commonly used for watchmaking, small assemblies and precision components. The matt‑chrome scale and vernier deliver clear contrast for rapid reading, while hardened measuring faces ensure wear resistance during repetitive use.

Robust design and practical extensions for blind holes

Built as a workshop solution, the set combines compact handling with components that address real production needs. The included setting ring allows quick verification of the measuring head before use, and the supplied extension (150 × Ø23.5 mm) permits measurement into deep or stepped blind holes without improvised fixtures. The four-piece composition of the set keeps each size range within a single module, improving handling and reducing set‑up time on the shop floor. The combination of a centred contact system and secure extensions reduces the need for secondary fixturing and streamlines in‑process inspection.

Clear benefits for quality assurance and traceability

For quality control applications the most relevant attributes are readability, repeatability and mechanical stability. The fine 0.001 mm graduation supports tight tolerances and detects small wear trends, while the ±0.005 mm accuracy sets realistic expectations for process capability. The durable scale finish and solid construction minimise drift from handling, delivering reproducible readings across multiple shifts. Supplied as a complete set, the tool fits inspection benches and measuring stations where quick changeover and dependable internal measurements are required.

Discuss specification and ordering with Metav Werkzeuge in Emmerich — call +49 2822 7131930 or email info@metav-werkzeuge.com to confirm the M312.487 three-point internal micrometer set for specific applications

Technical Data

• Article number: M312.487
• GTIN: 4054469182285
• Weight: 10.7 kg
• Range: 50–100 mm
• Resolution: 0.001 mm
• Accuracy: ±0.005 mm
• Pieces per set: 4
• Extensions: 150 × Ø23.5 mm
• Setting ring: 62 + 87
• Material: Scale and vernier matt chrome-plated
• Suitable for blind-hole measurement
• Includes hardened measuring faces

Facts

• Category: Internal measuring set
• Brand: Metav IndustryLine
• Primary use: Blind-hole and internal diameter measurement
• Measurement principle: Three-point contact
• Delivery: Complete set in protective case

Special features

• High-contrast matt-chrome scale
• Precision vernier with fine graduation
• Deep-hole extension for stepped bores
• Robust construction for routine workshop use

FAQ

What size range does the set cover?
The three-point internal micrometer set covers 50–100 mm, suitable for micro-range internal measurements in small to medium components.

How fine is the resolution and what accuracy can be expected?
Resolution is 0.001 mm and the stated accuracy is ±0.005 mm, allowing detection of small dimensional shifts in production components.

Can the set measure blind holes and stepped bores?
Yes — the set includes an extension (150 × Ø23.5 mm) and a setting ring to enable reliable measurement of blind holes and stepped internal features.

How many measuring units are supplied in the set?
The delivery comprises four pieces per set, supplied together as a complete inspection kit under SKU M312.487.

Are the measuring faces durable for repeated shop-floor use?
The measuring faces are hardened and the scale is matt‑chrome finished, designed to withstand routine workshop handling while maintaining repeatability.

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