Pro-Mag Burning Square: A precise tool used in structural thermal cutting and layout. The tool base is a perfect square containing powerful cast-in-magnets. This permits placement in any position. The tool surface is embossed with a protractor inscribed with two 90º quadrants graduated in 1º increments. The top of the tool carries an 18" ruler blade divided in 18" increments. The ruler can be locked in place at the desired angle setting. Never used. Six foot straight edge attachment available.
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