Silverline Aluminium Scale Tri Rule - Cast aluminium scale rule with triangular body for safer cutting and scoring of materials. Clearly marked metric graduations. 6 scales for precision drawing. Concave base reduces smearing when drawing. Scales 1:20, 1:25, 1:50, 1:75, 1:100, 1:125.
 
Features include:
Tough cast aluminium
Clearly marked metric graduations
6 scales for improved drawing precision
Triangular body allows safer cutting & scoring of materials
Concave base reduces smearing when drawing
 
1-2 working day lead time for delivery