FineArt triangular scale(TDIN) is a stylish rule suitable for architects. FineArt 30 cm triangular scale is made of white plastic with precision divisions and has color coded sides of red and yellow-5:1 2:1 1:1 1:2 1:5 1:10 1:20 1:50 1:100 1:500. Dimensions are in (cm) and (m) for easier working. Scale rulers are used by architects and engineers to calculate dimension in a blue print or building plan without the use of time-consuming and complicated math equations.