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STAEDTLER® 987 18 Reduction scale ruler Blistercard containing 1 scale trinangular, plastic 30 cm, Architects (metric 1:100, 1:200, 1:250, 1:400, 1:500) STAEDTLER® 987 18 Reduction scale ruler Blistercard containing 1 scale triangular, plastic 12, Engineers (imperial 10, 20, 30, 40, 50, 60)" STAEDTLER® 987 18 Reduction scale ruler Blistercard containing 1 scale triangular, plastic 30 cm, Engineers, oil industry (metric 1:20, 1:25, 1:30, 1:50, 1:75, 1:100) STAEDTLER® 987 18 Reduction scale ruler Blistercard containing 1 scale triangular, plastic 12, Mechanical Engineers (imperial 1/8, 1/4, 3/8, 1/2, 3/4, 1, 16, 50)" STAEDTLER® 987 18 Reduction scale ruler Blistercard containing 1 scale triangular, plastic 30 cm, Surveyors (metric 1:500, 1:1000, 1:1250, 1:500, 1:200, 1:250) PreviousNext
