ITEM NAME:Stainless Steel Ruler Straight Edge Metal Ruler Set For Engineering Office V5Q9 Stainless Steel Ruler Straight Edge Metal Ruler Set For Engineering Office V5Q9 End sides are smooth with no burr; One end is square, the other is rounded with a hole to make it easy for hanging, convenient storage. Perfect for school or office Perfect for school and training class, paper piecing, craft work. Suitable for carpenter, engineering, architects, handy to use as drawing straight edge or measuring device. 0.9 mm thickness avoid sharp edges. Conversion table: converse metric to imperial quickly colour: Silver material: stainless steel size: 15 inch (40 cm), 12 inch (30 cm), 6 inch (15 cm) Package Contents: 2 X 15 inch Stainless steel ruler 2 X 12 inch Stainless steel ruler 2 X 6 inch Stainless steel ruler.Perfect for school or office Perfect for school and training class, paper piecing, craft work. colour: Silver. End sides are smooth with no burr; One end is square, the other is rounded with a hole to make it easy for hanging, convenient storage.