This is the Hobbico Builder"s Triangle Set. FEATURES: Made of Semi-Clear Soft Bendable Plastic. 2-Piece Set with Interlocking 30°, 45°, and 60° Triangles. Interlocking Design Allows Them to Stand Alone to Create and Angle Guide for Squaring in 2 Dimensions 45° Triangle: Inch scale up to 5" in 1/16" increments Thickness gauge 1/8", 3/16", 1/4", 5/16", and 3/8" 90° protractor in 1° increments 30/60° Triangle: Inch scale up to 6" in 1/16" increments Metric scale up to 220mm in 1mm increments 30/60° Triangle: Centering gauge Corner cut-out for perfect 90° alignment INCLUDES: One 30/60° Triangle One 45° Triangle COMMENTS: Also available Builder"s Ruler HCAR0482. AXY 1/4/97 ir/jl