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Ruler Rolling Parallel 300mm - Du-All Art & Drafting Supply
Amazon.com : ALVIN Parallel Gilder Professional Rolling Ruler 10" Model 295 Drafting and Architecture Tool for Students, Hobbyists, and Professionals, Ideal For Drawing Parallel Lines, Circles and Arcs - 10 Inches :
Multi-Purpose Drawing Parallel Rolling Ruler Balancing Scale Parallel Glider for Student School Office Measuring Tool _ - AliExpress Mobile
Staedtler 12" Rolling Ruler 4 Tools in One! Compass Protractor | eBay
Amazon.com : ALVIN Rolling Parallel Ruler, 12 Inch, Model 312, Multipurpose Imperial and Metric Rolling Ruler for Students, Artists, and Designers, Ideal for Drawing Parallel Lines, Curves and Arcs - 12 inches :
Staedtler Metal T-Square 24" Ruler | Jerry's Artarama