Johnson Level & Tool 420EM 16-Inch English/Metric Metal Combination Square 6&quot; Inch/Metric Professional Combination Square Great for measuring and marking on the job or for smaller jobs at home Heavy-duty cast zinc head with black, chip-resistant e-coating finish Stainless steel blade with permanently stamped graduations Reversible head with lock bolt and steel screw 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use