Alvin Drafting
Tri-Scale 12in Ruler
Tri-Scale 12in Ruler
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The Tri-Scale 12in Ruler offers sharp, easy-to-read graduations in both English and metric units, designed for architects, engineers, and mechanical draftsmen. Crafted from high-impact plastic with a soft satin finish, it features tapered edges for comfortable handling. Its precision design ensures accurate measurements and consistently straight edges, making it ideal for students, hobbyists, and professionals. Trusted since 1950, Alvin provides reliable drafting tools known for quality and durability.
Materials
Materials
Shipping & Returns
Shipping & Returns
Dimensions
Dimensions
Care Instructions
Care Instructions
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