SawGear. SawGear is a portable digital measurement tool that attaches to any miter saw and lets you quickly select and automate cutting dimensions for repetitive cuts accurate to 1/128- inch, according to the manufacturer. Enter a dimension on the unit's keypad and the SawGear automatically positions a stop block along its integral rail, allowing crosscutting with no additional measurement. To change measurements, you simply punch in another dimension. Price: $2,195 (8-foot model) and $2,495 (12-foot model). 503-914-4400. www.sawgear.com.