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Alvin 3 Sided Engineer Scale No 119 PC Triangular Drafting Ruler Architect 12"

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Tacro SCALE Drafting 3 Sided RULER NO. 4857 ENGINEER Triangular Made In Japan

Engineer Scale Ruler 12 Inch Aluminum Laser-Etched Triangular Drafting Tool Blue

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ALVIN 119 PC Plastic Architect Triangular Scale , Drawing Drafting....