Woodpeckers BC-24600 BigCal 24 in. (600mm) Woodworking Caliper

PrecisionInside AND Out

When you're looking for piston-fit accuracy, you need a tool that gives you precise inside and outside dimensions. Woodpeckers BigCal Woodworking Calipers do just that and more. Calipers are often used in metalworking, but most standard calipers max out at just 6" and are graduated to the thousandth of an inch. BigCal combines machinist-level accuracy and furniture-sized scale in a caliper designed for woodworking.

BigCal's jaws align perfectly between the inside and outside references. Now, you can transfer critical dimensions with an exact physical reference. To secure the jaws, we engineered a dual-function nut that applies a rock-solid grip and squares the jaw to the blade. That means no slip and no wiggle when transferring critical dimensions. Woodpeckers locks the fixed jaw precisely at zero so you can slide the adjustable jaw out of the way and use BigCal as a T-square.

No more complicated dials or confusing fractions. Woodpeckers engraved the scales in both 1/32" and 1mm graduations. Turn BigCal over and you'll find the scales read from the opposite end. You can use this side to guide the depth of the mortise or groove. Woodpeckers made it easy to transfer that dimension using the scribing notch on the end of the blade.

Precision-milled from high-quality stainless steel, BigCal's blade is rigid even with the jaws fully extended. Woodpeckers mills the jaws from solid blocks of aircraft-grade aluminum, then finish the jaws in signature Woodpeckers "red" to keep the calipers looking flawless for decades.

Woodpeckers makes BigCal in two sizes. The large caliper lets you measure inside and oustide dimensions to 24 in. (600mm) - 18 inches more than most standard calipers. On the smaller BigCal, you'll get over 12 in. (300mm) between the jaws. The jaws on both are 2-1/4 in. deep for outside measurements and 3/4 in. deep for inside measurements. Each BigCal includes a wall-mountable Rack-It, so your new tool will always be perched and ready to work.

Like all Woodpeckers products, each BigCal Woodworking Caliper is precisely machined and carefully inspected in its Strongsville, Ohio facility just south of Cleveland.