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See The New Mathomat R300 Ruler

91912 Ratios: 1:1, 20, 25, 50, 100, 200, 250, 500 - Hand scale ruler, 300mm

91912 Ratios: 1:1, 20, 25, 50, 100, 200, 250, 500 - Hand scale ruler, 300mm

91912 Ratios: 1:1, 20, 25, 50, 100, 200, 250, 500 - Hand scale ruler, 300mm

$4.95 AUD

Quantity

Hand scale rulers, 300mm, 4 bevel

Ratios: 1:1,20,25,50,100,200,250,500