Japan, Obishi Keiki
Obishi Keiki Seisakusho Graduated Square with Base ( C Type ) ( Production Example )

Made in Japan
Manufacturer : Obishi Keiki Seisakusho
- On the long side exterior angle side surface, there is 1 mm interval graduation (One surface only)
- Use for measurement of tools perpendicularity, and squareness of parts attached using jigs, products squareness, etc
- The short side is thick making it possible for stable measurement.
- Also very convenient for use as a marking square.
- The long side and short side are joined using a special method.
Nominal Measurement | Measurement (H×L×W×tmm) | Squareness (μm) | Mass (kg) |
100 | 100×75×12 | ±15 | 0.15 |
150 | 150×100×18 | ±18 | 0.35 |
200 | 200×130×20 | ±20 | 0.7 |
300 | 300×200×27 | ±25 | 1.6 |
400 | 400×210×25 | ±30 | 2.0 |
600 | 600×335×30 | ±40 | 5.0 |
1000 | 1000×430×55 | ±60 | 15.5 |
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