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Mars® 561 - Reduction scale ruler

Staedtler Ruler Gradient Ruler Mars 7.9 inches (20 cm) 964 51-8 : Office Products

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Staedtler Mars Engineer Scale 961 93-34 Vintage Japan Triangular

Mars® 561 - Reduction scale ruler

Staedtler Ruler Gradient Ruler Mars 7.9 inches (20 cm) 964 51-8 : Office Products

Rolling Parallel Ruler

Staedtler Scale Rulers

Parallel Rolling Ruler, 12 Inch - John Neal Books

Portable Universal Multi-purpose Rolling Ruler Drawing Parallel Compass-Ruler School Stationery Protractor Ruller rolling ruler metal for drafting

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Staedtler Scale Rulers

Staedtler Scale Ruler AS1212-3

Staedtler Ruler Gradient Ruler Mars 7.9 inches (20 cm) 964 51-8 : Office Products