The Woodpeckers BigCal is a specialized caliper designed specifically for woodworking. It combines machinist-level accuracy with a furniture-sized scale, making it ideal for precise measurements in woodworking projects. With jaws that align perfectly between inside and outside references, the BigCal allows you to transfer critical dimensions with exact physical references. Its dual-function nut ensures a rock-solid grip and prevents slip or wiggle during measurements. The engraved scales are provided in both 1/32″ and 1mm graduations, making it easy to read and use. Whether you’re measuring inside or outside dimensions, the BigCal delivers precision and reliability.