ISO NORM 1 Academy Architects Engineers Triangular Scale Rule 12 Inch (300mm)

• Triangular Academy scale rule
• Accurate and clear 
• Quality, cost effective material  
• Colour co-ordinated scales in ten dividings
• Ideal for educational purposes

12" (300mm) Dividings: 1:1 x 1:2  1:5 x 1:10  1:20 x 1:50