Vintage inspired solid brass combine tool - protractor - 14 cm This is the perfect antique-inspired accessory for your desk or to carry with your journal. Made of 100% solid brass and etched for durability with metric scales. The combined tool includes a protractor, French curve, triangles, and circle gauge. It makes the perfect reference point for all applications. Product details: Ruler: 14 cm (140 mm) Black etched scale Thick brass Protractor French curve Triangles 30, 45, 60 degrees Circle gauged 6 sizes Good for cutting 100% handcrafted in Istanbul, Turkey The protractor is an instrument used for measuring angles. The protractor is usually a semi-circle size divided into one hundred and eighty parts or a full circle divided into three hundred and sixty parts. A French curve is a template composed of many different curves. It is used in manual drafting and in fashion design to draw smooth curves of varying radii.