The triangular ruler is made of high quality metal materials and is precisely manufactured by German-funded companies. It is very suitable for engineers, architects and designers. Allows you to point out directly or read the distance between two points without any conversion, the total length is 30cm long and an extra 15cm ruler. High precision drawing scale can provide accurate data for various technical drawings, engineering development, construction and machinery. Six reduction ratios, metric triangular scales are 1:100 1:200 1:250 1:300 1:400 1:500, and different versions with different ratios are available. The edges and corners of the scale are edged to prevent sharp corners from damaging your hands, and the characters are clearly engraved for easy reading of data drawing measurement. Edge processing e to prevent damage to sharp corners when drawing. Laser engraving, extremely high precision, never fade. Six metric scales help you work efficiently and quickly . Ideal drawing tool for architects, draftsmen, engineers, homes and offices. Product Name: Triangle Scale Net Weight: 85g Dimensions: 30 cm Color: silver Proportion: large proportion Metric scale: 1:100 1:200 1:250 1 : 300 1: 400 1: 500 You get 1 large-scale silver triangle Welcome to meet