Johnson Level & Tool &nbsp;420EM-S Heavy Duty Professional Inch/Metric Stainless Steel Combination Square, 16" Heavy duty cast zinc head with black, chip-resistant e-coating finish Auto-lock blade assembly Stainless steel blade with permanently etched graduations 1/8&quot;, 1/16&quot;, 1/32&quot;, mm Hardened, screw-in scriber won't fall out Durable acrylic level vial 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.