Liquidraw Triangular Scale Ruler - 30 cm | Colour-Coded Plastic Metric Tool | Features Scales from 1:10 to 1:500 | Suitable for Architects & Engineers | Precise Divisions | Includes Storage Case

Liquidraw Architectural Scale Ruler Metric 30cm Triangular Ruler, Architect Scale Ruler For Drawing, Engineering, Drafting, Artists, Blueprint, Architects & Engineers

Staedtler 12-Inches Engineers Triangular Scale (98718-34BK)

Mr. Pen- Metric Engineer Scale Ruler, Ruler, 12" Aluminum Scale Ruler, Triangular Scale, Scale Ruler for Blueprint, Triangle Ruler, Metric Engineering, Drafting Ruler, Engineering Scale