Just about every square Woodpeckers builds has a shoulder to reference against the edge of your stock…and that’s a good thing. But, from time to time you need a square that sits dead flat, and here’s the perfect solution; Woodpeckers Precision Triangles. Just like our Precision Woodworking Squares, these triangles are CNC-machined from cast and ground tool plate aluminum, the most stable aluminum on the market. They’re held to the same exacting tolerances, too (±.0085°). But with no shoulder, the Precision Triangles lie flat in the bottom of boxes and cabinets to check square, or flat on your table saw to set your miter gauge perfectly. We build these little gems in two sizes, 4" and 6".