Square Deal. Jevons Tool 3D Squares are designed to aid in clamping casework corners and other joinery. But because their 6-inch machined aluminum legs are guaranteed to be within +/-.002 degrees of 90 degrees, they can also be used to square up fences and blades. Their contact surface is more than an inch wide, so they balance better than most squares on machinery tables — giving you both hands free to make adjustments. A set of four costs $48; a 2-inch version, the Mini 3D Square, costs $13 each. Jevons Tool, 913/384-0023. www.jevonstoolco.com
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