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.

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