EBayLittle tool, big results. Johnson's easy to use 6" combination square gives you the accuracy and precision you need for every job. Its stainless steel blade has english graduations of 1/8", 1/16" and 1/32" 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 job site 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. A necessary tool for any tradesman, this combination square is handy for any number of different project and tool-setup applications from woodworking, to stonemasonry to metalworking. Because the highly accurate CNC-machined head acts as a stop, it guarantees your layout lines are always square to the edges, making it ideal as a machinist's square, a straightedge, an adjustable try square, a miter square, a marking gauge and a depth gauge. COMBO SQUARE: The square head of this Johnson metal square ruler is CNC machined for enhanced precision. Its Auto-Lock blade assembly makes it easy to accurately align tools for usage. It gives the accuracy and precision needed for every job. STAINLESS BLADE: This combination square tool has a stainless steel blade with English and metric graduations of 1/8", 1/16", and 1/32", as well as metric graduations that are permanently imprinted, so they will never fade or degrade. CAST ZINC HEAD: The durable acrylic vial, heavy-duty cast zinc head with a chip-resistant e-coating finish, and reinforced screw-in scriber that won't fall out make this square withstand even the worst construction site usage. APPLICATIONS: The CNC-machined head of the measuring tool acts as a stop, ensuring layout lines are always square to the edges. This makes it an ideal machinist's square, straightedge, adjustable try square, miter square, marking gauge, and depth gauge. PRODUCT SPECIFICATIONS: This silver 6’’ combination square measures ‎0.6 × 4.2 × 8.2 Inches and weighs 0.6 Ounces (22.68 G). This tool is designed and manufactured with precision in the United States.