The Kapro 353 Professional Ledge-IT Square features retractable ledge support for easy, hands-free use. The stainless-steel ruler has permanently etched gradation for long lasting accuracy. The first 4 inches are incremented 1/32 for fine and accurate measurements, extending to 1/16 of an inch for the remainder of the blade’s length. The Kapro 353 ’s blade has marking holes at 10°, 15°, 22.5°, 30°, 45°, 50° and 60° for angle marking and includes openings every ¼ inch for fluid and parallel pencil markings. This stainless steel ruler can be used for drywall, construction, and technical drafting. The 353 features an aluminum cast handle and 3 milled surfaces for maximum precision. We reimagine precision tools and accessories for professional craftsmen to weekend warriors while setting high standards by driving innovation in our designs.