This popular two-sided ruler is available in 18″ and 24″ lengths. It is 1 1/2″ wide and .032″ thick. The front has inches in 16ths on the top and picas/half-picas on the bottom. There is a type gauge on the left with 5 and 8 point scales and on the right with with 7 and 5 1/2 point scales. The back has a 10 point scale on the top and an agate line scale on the bottom. The back left type gauge has 9 and 11 point scales and the right has 16 and 14 point scales.