Incra PROTRAC06 6-Inch Precision Marking Protractor

Precision steel rule Combination protractor and 6" ruler Micro-fine marking holes at varying degrees Use with .5mm mechanical pencil Made in the USA We've reinvented the protractor by putting extra long guide slots at every 45 degrees, 30 degrees, 22.5 degrees, 5 degrees, 1 degree and 0.5 degree 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". WARNING: Cancer / Reproductive Harm - www.p65warnings.ca.gov