Think of the Bora Multi-Angle Adjustable Square as a try square on steroids. It consists of a handle and a flip-out stainless-steel ruler with multiple locking positions. Models 808 and 812 adjust from 22.5 to 157.5 degrees in 22.5-degree increments, and model 408 goes from 45 to 135 degrees in 45-degree increments. According to the manufacturer, the settings are accurate to .05 degrees after 50,000 folding cycles. The tools come in 8- and 12-inch lengths with composite or aluminum bases.
¦ Price: $17 to $47. 248-588-0395. www.affinitytool.com.