This Fire Weather Instrument Kit will help you quickly determine weather and burning conditions. Includes wind meter that measures up to 60 mph, Suunto Smoke Killer compass graduated at 0-360 degrees (Azimuth) for wind direction and fire location, sling psychrometer and psychrometer slide rule for wet and dry bulb temperature (30-110 degrees F), water bottle for wet bulb, 100 page notebook for recording data, and mechanical pencil.