Square/L-Shaped Ruler is used to set and test angles. 

Size: 300 x 200mm / 8" x 12"

Used to mark angles at 90 degrees and checking surfaces for squareness, this angle finder is ideal for carpentry, DIY, and handyman use. 

Constructed with steel blade with easier reading, this square is built for performance and supreme durability on work sites.

Accurately measure and mark 90 degree angles.