Inside Micrometer – 275–300 mm, 0.01 mm Resolution (Unbranded)

This 275–300 mm Inside Micrometer is designed for accurate internal dimension measurement across the large‑range 275–300 mm span. The rod‑type construction provides stable alignment inside bores, while the micrometer head delivers fine, repeatable readings with 0.01 mm resolution.

Although the manufacturer is not marked, the tool features hardened measuring contacts, crisp graduations, and a solid rod assembly typical of Japanese or European workshop‑grade internal micrometers.

This size range is commonly used in machining, toolmaking, jig building, mold work, and quality‑control environments where reliable internal measurement is essential.

Features and Performance

• 275–300 mm measuring range — Suitable for large internal diameters.
• Rod‑type construction — Provides stable alignment inside bores.
• 0.01 mm resolution — Fine graduations for tight‑tolerance measurement.
• Smooth thimble action — Consistent feel for repeatable readings.
• Hardened measuring contacts — Wear‑resistant and accurate.
• Workshop‑grade build quality — Solid, reliable, and durable.

Included

• 1 × Inside Micrometer (275–300 mm, 0.01 mm)

• No Wooden case

Specifications

Keywords

inside micrometer; internal micrometer; 275–300 mm micrometer; 0.01 mm resolution; machinist internal micrometer; precision metrology instrument; bore measuring tool.