Woodpeckers Woodworkers Edge Rule makes measuring narrow edges easy and precise. This 6-inch edge rule wraps around the edge of the stock, allowing for accurate measurements on both sides. Its smaller side is only 3/8-inch wide, designed for stock as thin as 7/16-inch. You can easily measure inside corners by zeroing out to the intersection and aligning to the stock. To find the center of the stock, simply make two marks using the 3/8-inch side. The rule features a profiled shape for smooth movement along the stock and beveled edges that place the scale right next to your work, minimizing errors and improving accuracy. Proudly made in the USA. Model Number: ERULE-6