Set Squares - Technical Drafting Rulers are combination of 8" and 10" professional triangles made of clear plastic . Set Squares are used in conjunction with straightedge of drawing board to draw accurate angles.
Thickness - 2.9 mm Markings on both side in mm/inch.
Isomars Set Squares - Technical Drafting Rulers are combination of 10" and 12" professional triangles made of clear plastic.
Set Squares are used in conjunction with straightedge of drawing board to draw accurate angles. 25cm/10"- 45 degrees 30cm/12"-60 degrees Thickness - 2.9 mm.