406EM Combination Square, 6 in L Blade, SAE, Metric Graduation, Stainless Steel Blade

Johnson's easy-to-use 6 in combination square gives you the accuracy and precision you need for every job. Its stainless steel blade has English graduations of 1/8 in, 1/16 in and 1/32 in as well as metric graduations that are permanently stamped, so you'll never worry about them fading or wearing. It features a durable acrylic vial, heavy-duty cast zinc head with a black, chip-resistant e-coating finish and hardened screw-in scriber that won't fall out so that this combo square can withstand even the roughest jobsite abuse. It was also designed with maximum accuracy in mind, its square head is CNC machined for greater accuracy and the Auto-Lock™ blade assembly makes it easier to accurately line up your tool for use.