12" Triangular Scale Ruler Aluminium Scale Engineer Architect Technical Drawing

12" Triangular ruler.

Made from aluminium alloy steel.

Great for hobby, craft or any applications which require scale measurements.

Provides scale measurements in ratios: 1:125, 1:20, 1:25, 1:50 & 1:75.

Total scale length - 300mm.

Total length 320mm.