Preset Angle Square. Bora's Multi-Angle Adjustable Square is designed to combine the accuracy of a combination square with the versatility of a T-bevel. The tool has an extruded aluminum body and a stainless steel ruler with eight preset angle settings: 0°, 22.5°, 45°, 67.5°, 90°, 112.5°, 135°, and 157.5°. The company says it's been tested to remain accurate (within +/- .05°) through 50,000 completed folding cycles. It comes in 8-inch and 12-inch sizes, for $44 and $47. Affinity Tool Works, 866/588-0395, affinitytool.com/bora
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