Speed meets precision with Johnson’s new Johnny Square MACH-1 rafter square with level vial – a must have tool engineered for professionals' providing exceptional durability, versatility and accuracy. Our innovative Smart Mark Cutout delivers speed and accuracy with its easily identifiable markings, cutouts and notches for layout, scribing and marking cuts. Marking spaces are positioned to layout 1X, 2X, 4X and 6X lumber in widths from 1" to 6" as well as LVL's. Additional slots are positioned to mark 22.5, 30, 45 and 60 degree angle cuts. V-notches are located at each roof pitch to help accurately align your pencil when marking common top cuts. The frame has 1/16" scale graduations for precision and measures all the way to 7-1/4" to reach the full width of a 2x8 material. Scribe notches for ripping lumber are positioned every 1/8". The 1" wide multifunctional heel with replaceable level vial serves as a torpedo to indicate level and plumb and allows angle or roof pitch measurements on existing structures. The heel also features 1/16" scale graduations on the bottom and both sides offering maximum versatility with rapid and reliable measuring. Hi-visibility EZ-Read™ graduations and numbers are laser etched deep into the surface to resistant fading, scratching or deterioration, providing long-lasting results even under tough and demanding work conditions. Crafted from solid aluminum with CNC machined edges and vial holder for ultimate precision and accuracy. The matte black anodized coating reduces glare in direct sunlight and provides protection from rust and corrosion. Upgrade your toolkit with precision you can trust from Johnson!