Woodpeckers Precision Woodworking Tools MINISQUARE Mini Square

You can use any square for checking a chisel or plane blade, but they're usually too long to clear the handle, not wide enough to make it easy to align to the edge and generally poorly designed for the job. For sharpening, the Woodpeckers Mini Square is just the right size, made out of the right material and is one of the only squares specifically designed for sharpening. Fits in your pocket or its own custom fitted case.