Starrett Combination Set, 18" Blade Length, 4R Graduation Type | With Square, Center, Reversible Protractor Head & Blade, Cast Iron Heads, Hardened Steel, Photo-Engraved Blade, 435-18-4R

Easy to Use - The square head can be moved up and down on the rule with a lockable assembly and a specially designed bolt to engage the slot for stability and versatility while measuring.

Perfect Attachment - The Center Head is an available attachment that provides an easy means of accurately locating the center of cylindrical or square work.

Get Accurate Measurements - The protractor head has revolving turrets with direct-reading double graduations, a full 0 to 180-Degree range in opposite directions which permits accurate and quick direct reading of angles above or below the blade.

Complete Quality Made Tool - The set includes the rule, square, protractor, and center heads that are made from durable hardened steel, which can withstand even the most strenuous jobs. It's perfect for any construction project or DIY task.

The Standard for Excellence - Proudly made in the USA, Starrett combines over 140 years of American heritage and innovation with globally sourced materials to deliver exceptional quality tools and products.