Mitutoyo Inside Micrometer – Extension Type – 50–1000 mm

This Mitutoyo Inside Micrometer Set (50–1000 mm) is designed for high‑accuracy internal measurement across a very wide range of bore sizes. The extension‑type system allows the micrometer head to be paired with precision‑ground rods and anvils, providing stable alignment and repeatable readings from medium bores through to large industrial diameters.

The micrometer head features crisp graduations and smooth thimble action, while the extension rods are rigid and straight for consistent measurement. This set is ideal for machining, toolmaking, jig building, mold work, engine rebuilding, heavy‑equipment maintenance, and inspection environments where large‑range internal measurement is required.

Mitutoyo’s extension‑type inside micrometers are known for their accuracy, durability, and long‑term workshop reliability.

Brand Information

Mitutoyo (Japan) A world‑leading manufacturer of precision metrology instruments used across machining, aerospace, automotive, and inspection industries.

Features and Performance

• 50–1000 mm measuring range — Covers medium, large, and extra‑large internal dimensions.
• Extension‑rod system — Modular configuration for multiple bore sizes.
• 0.01 mm resolution — Fine graduations for tight‑tolerance measurement.
• Precision‑ground rods — Straight, rigid, and stable under measurement load.
• Smooth thimble action — Consistent feel for repeatable readings.
• Japanese build quality — Durable, accurate, workshop‑ready.

Included

• 1 × Mitutoyo Inside Micrometer Head (0.01 mm resolution)

• Extension rods (full set as shown)

• Storage case (used condition)

Specifications

Keywords

Mitutoyo inside micrometer; extension‑type mic; 50–1000 mm micrometer; internal measuring tool; 0.01 mm resolution; Japanese metrology instrument; machinist inside mic; precision bore measurement.