One of my all-time favorite squares is the Woodpeckers Delve Square.e. A ton of great features packed into a small package. I use this little square all the time! The sale goes through 10/23/22.

About this Square

The most unique feature of the DelVe Square is easy to overlook but invaluable once you’ve found it. One side of the base is 1/4" from the blade and the other is 3/8". Mark from the 1/4" side on both edges of 3/4" stock and you’ve just laid out a perfectly centered mortise or tenon. Use the 3/8" side to locate the center of 3/4" stock for joinery or hardware installation. The base wraps around your stock for a positive, accurate reference. That wrap-around feature also lets you mark the face and edge at the same time.

With a DelVe Square in your pocket, you always have set-up blocks of 1/8", 1/4", 1/2", and 3/4" at your fingertips. The blade is 1/8" thick and 1/2" wide. The base is 1/4" thick and 3/4" wide. Use whichever section you need for machinery set-up, joinery layout, or other referencing chores.

Scales on the blade are engraved to an accuracy of ±0.004" total accumulated error. To make an accurate layout even easier, there are scribing guides milled every eighth inch along the blade. Just drop the tip of your pencil in the right hole and slide the base along the edge of your stock for perfectly parallel lines at the precise measurement you choose. To lay out angles, the hypotenuse is engraved at 5° increments, plus 22-1/2° and 67-1/2°.

Need a hole centered on 3/4" stock? No problem, there’s a hole milled 3/8" from the inside edge of the base and perfectly sized to work with self-centering drill bits.