Square Head Protractor

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General's heavy-duty steel protractors are trusted by machinists and draftsmen worldwide to deliver crucial measurements with unwavering accuracy. The 6" adjustable arm is ideal fo r setting bevels, taking measurements and transferring angles. Ultrafine etched graduations read from 0° to 180° in forward and reverse directions and will not wear or rub off. Made of ground stainless steel for precision and durability. Preferred by machinists, draftsmen & mechanics for setting bevels, measuring and transferring angles Made of ground stainless steel for optimum accuracy Permanently etched graduations from 0° to 180° in opposite directions 3-3/8" x 2" head 6" adjustable protractor arm locks into desired position with knurled thumb nut Show more