This Johnny Square® is proudly made in the USA and is the first rafter square on the market to use a continuous scribing notch meaning you can mark and rip lumber to any size you want. This rafter square is solid aluminum die-cast and CNC machined right here in Wisconsin. And staying true to its Wisconsin roots, Johnson even included an integrated bottle opener in the center of the square. This square uses deep cast-in graduations that will never peel-off, wear-off, fade or smudge and also comes with a low-glare, protective powder-coated finish. It also features handy markers that measure 2 x 4 board dimensions of 1-1/2 in, 3 in and 3-1/2 in.