Incra have 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 160mm rule with micro-fine marking holes at every 1mm.
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Great Xmas Gift! $49.90