What you will get (Imperial Scale Type): 1 x 3 Color-coded groove Architectural Scale Ruler, 1 x 3 Color-coded groove Engineering Scale Ruler, 1 x Black Standard Metal Ruler.So whatever project you’re working on, there’s a ruler in this deluxe bundle for it.

Architect's Triple-Sided Scale: 1-1/2", 1, 3/4", 3/8", 3/16", 3/32", 1/2", 1/4", 1/8", 3, 16

Engineer's Triple-Sided Scale: 1:10, 1:20, 1:30, 1:40, 1:50, and 1:60

and a Standard Metric & Imperial Conversion metal straightedge ruler.

Premium Material: Made of professional grade solid aluminum and coated by anodized technology, this set of triangular scale rulers with 3 color-coded grooves and clear permanent markings, will never fade or rub off, keeping glossy.

Practical and solid dimensional triangular design with clean edges without ridges will help to make perfect lines conveniently, perfect for the drafting and measuring of architectural drawings, easy and quick to read and select desired scale to finish your work.

Triangular scale with professional grade and supreme accuracy is used for architecture, drafting, engineering, blueprints, geometry drawing, mechanical project, school work widely, a great and perfect tool & gift for any architect, draftsman, engineer, students, etc.