Rumold Scale Ruler

Trianguler 30cm scale ruler ideal for use in architecture and mechanical engineering.

• Architect 1,  1:20, 1:25, 1:50, 1:75, 1:100, 1:125
• Architect 4, 1:100, 1:200, 1:250, 1:300, 1:400, 1:500
• Engineer DIN,  1:25, 1:5, 1:10, 1:20, 1:100