You know avalanches happen most frequently on 35-degree slopes. But do you KNOW when you're on one? Determining slope angles can be tricky. Carry this meter in your pocket, and make a game out of guessing slope angles. Take it out and see who's closest. Winner gets a PBR at day's end. This slope meter has a steel ball inside a liquid-filled tube, which when placed perpendicular to the snow, reflects the slope angle. The backside can also be used as a scraper to remove excess snow from your skins or wax from your ski. Here's another idea: Attach the meter to a ski pole or ski for quick and easy slope readings anywhere in the backcountry.