INCRA's Precision Protractor offers unparalleled accuracy
Incra has reinvented the protractor by adding extra long guide slots at every 0.5, 1°, 5°, 22.5°, 30°, 45° interval to plot any angle with ease and absolute accuracy. Just select the slot or hole, insert a 0.5mm mechanical pencil, and mark the measurement with complete accuracy.
Take a few seconds to remove the T-Bar and you will also have an excellent 160mm Centring Rule with micro-fine marking holes at every 1mm.