Here are just some of applications for this nifty rule:
A. Measurements from Inside Corners Hardware installation usually calls for a measurement referenced from an intersecting cross-member… like the rails and stiles of a cabinet face frame. The Edge Rule makes this job simple, keeping your scale square to your stock and starting flush at the edge. Just by flipping the tool over, you can come in from either right or left just as easily.
B. Marking Edge & Face By placing the desired dimension at the end of your board as shown in the photo, you can mark both the face and edge at the same time. As mentioned above, this works just as
easily and accurately from right to left as it does from left to right.

C. Finding Center of 3/4” Nominal Stock We all know 3/4“ plywood isn’t 3/4“ anymore, and even if you’re careful with your planer, solid stock can be a hair under or a hair over. Using the short side
of the Edge Rule, you can scribe a line from both sides and the center of the board is between the two lines…it doesn’t matter whether your stock is slightly under or slightly over, the center will always be between the lines.
D. Mid-Field Measurements Even when you’re not working at the edge of your stock, you’ll still find the Edge Rule handy. The profiled shape makes it easier to move around on your stock than a thin,
flat rule and the beveled edges get the scale right next to your stock where you need it. The angle inside the Edge Rule is 89° meaning the the Edge Rule rests on the outside edges, accommodating slight deviations in your workpiece. Both edges are beveled, which simplifies marking and minimizes parallax error. The scale is laser engraved with 1/32″ graduations to a tolerance of ± .004“.
E. Repetitive marking is easier and more accurate when you add an Edge Rule Stop. If you need a place to keep your Edge Rules organized, the Edge Rule Rack-It keeps them handy and safe (requires an Edge Rule Stop for each stored Edge Rule). Woodworkers Edge Rules are available in 6“, 12“,24“ and 36“ lengths. Your choice in the longer Edge Rules depends on the scale of your work. If you make jewelry boxes and smaller scale projects, the 12“ is perfect. Furniture and cabinet projects call for either the 24“ or 36“.