Incra INC-RULE12 12" Marking Rule - to 1/32

We've reinvented the protractor by putting extra long guide slots at every 45°, 30°, 22.5°, 5°, 1° and 0.5° interval to plot any angle with ease and absolute accuracy. If you take a few seconds to remove the T-bar you will also have an excellent 6" rule with micro-fine marking holes at every 1/32".