Marui Seiki MP101 Precision Angle Protractor

The Marui Seiki MP101 Micro‑Protractor is a high‑accuracy Japanese‑made angular measuring instrument designed for precision layout, inspection, and machining work. With a micrometer‑adjustable vernier head, it allows extremely fine angular adjustments and repeatable readings, making it ideal for toolmaking, jig building, die work, and precision engineering.

The MP101 includes multiple blades and a right‑angle square, enabling measurement of internal angles, external angles, bevels, and complex setups. Marui Seiki’s micro‑protractors are known for their smooth mechanics, crisp graduations, and long‑term workshop durability.

Brand Information

Marui Seiki (Marui Kenki / Marui OKK) is a respected Japanese manufacturer of precision metrology tools, protractors, and layout instruments. Their micro‑protractors are widely used in machining, aerospace, automotive, and toolmaking industries for dependable angular accuracy.

Features and Performance

• Micrometer‑adjustable vernier head — Fine angular resolution for precise setups.
• High‑accuracy dial scale — Clear graduations for reliable angle reading.
• Multiple blades included — Straight blades, bevel blades, and square for versatile measurement.
• Rigid construction — Stable body ensures consistent angular alignment.
• Japanese build quality — Durable, accurate, and workshop‑ready.
• Ideal for — Machining, jig building, toolmaking, inspection, and layout work.

Included

• 1 × Marui Seiki MP101 Micro‑Protractor

• Straight blades

• Bevel blades

• Right‑angle square

• Original wooden storage case (normal handling wear)

• No additional accessories

Specifications

Keywords

Marui Seiki MP101; micro‑protractor; precision angle protractor; Japanese measuring tool; machinist protractor; workshop metrology instrument; angular inspection tool.