Here's a handy rule with 4 highly useful scales. The regular rule side has both 1/16th and 1/32nd inch graduated scales. The reverse side has a centering rule marked in 1/50th inch increments and a protractor which reads both left to right and right to left. Graduations are chemically etched so they won't rub off. Rule is 1-3/8" wide. Stainless steel. USA