Triangular Academy Scale Ruler

Metric ‘A’ trianglular Academy scale rule

Colour co-ordinated scales in ten dividings
Ideal for educational purposes

300mm Dividings: 1:1, 1:10×1:2, 1:20, 1:5, 1:50×1:100, 1:200, 1:500, 1:1000×1:1250, 1:2500