Fairgate Designer L-Squares are available in aluminum. The long arm is graduated in fractions of an inch: in 8ths, 24ths, 12ths, 6ths, 3rds, and 2/3rds, with inches in 8ths on the reverse. The short arm is graduated in inches in 8ths, 32nds, 16ths, 8ths, 4ths and 1/2s.