Woodpeckers Woodworkers 12-In. Edge Rule makes measuring narrow edges effortless and precise. Designed to wrap around the edge of the stock, it provides accurate measurements on both sides. The smaller side measures just 3/8 inch wide, for stock as thin as 7/16 inch. This edge rule is i for measuring inside corners by zeroing out to the intersection and aligning it to the stock. You can easily find the center of the stock by making two marks using the 3/8-inch side. Its profiled shape allows smooth movement along the stock, while the beveled edges position the scale right next to your work, minimizing errors and inaccuracies. Proudly made in the USA. Model Number: ERULE-12