This Academy Scale Ruler has a triangular design and 12 varieties of scale measurements making it a handy addition to your stationery kit. Suitable for architects as well as preparing scale drawings such as blueprint and maps.
-300mm triangular scale rule.
-Scales are 1:1; 1:2; 1:5; 1:10; 1:20; 1:50; 1:100; 1:200; 1:500; 1:1000; 1:1250; 1:2500.
-Suitable for architects and preparing scale drawings