Rare Alvin 241B Engineer Scale 12in Triangular Drafting Ruler Solid Bamboo Japan

Alvin 241B Professional Engineer Scale 12" Triangular Drafting Ruler, Solid Bamboo, 10 20 30 40 50 60 Graduations, Made in Japan. Part Number: 241B. It is double numbered. It features a bamboo core with white laminated high-impact plastic faces.

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