Two sided scaling ruler
The 622 is a two-sided scaling ruler with a width of 1 1/4″ and thickness of .032″. It is available in a 24″ length only. The front side has 1/3 off; 1/2 up increments (each increment is equal to 1 1/2 for scaling) on the top and inches in 10ths on the bottom. On the back there are inches in 16ths on the top and 12ths on the bottom. The center has inches incremented in inches/feet and a zero-center scale incremented in 1/2″.