Smooth Rolling Parallel Ruler 15cm 30cm for Architects and DIY Projects

Multi Purpose 15cm 30cm Roller Parallel Ruler for Architects and Artists

30cm 15cm Transparent Roller Ruler Parallel Ruler for Technical Drawing Use

15cm 30cm Rolling Parallel Ruler for Technical Drawing and Design Work

Efficient 15cm 30cm Parallel Ruler for Complex Drafting and Angle Tasks

15cm 30cm Ergonomic Drawing Roller Ruler for Professionals and Students

Ergonomic Marine Parallel Ruler Reliable Navigation Tool for Surveying