Sun Company Ascent Altimeter - Battery-Free Altimeter and Barometer | -Trend Indicator with Rugged Aluminum Case and Reflective Lanyard | Reads Altitude from 0 to 15,000 Feet

Rugged Aluminum Housing - Strong hand-held aluminum case keeps the altimeter gauge protected. Reflective, break-away lanyard is included and helps keep the altimeter portable any hiker, backpacker, or camper. Accurate Readings - Adjustable dial lets you account high or low pressure systems so that you get the most accurate reading possible. The perfect tactical pocket altimeter hiking, camping, backpacking, or fishing. Battery-Free - This analog altimeter is battery-free and simply adjusts based on the surrounding barometric pressure. More reliable than the more expensive digital watch alternatives. Pair your Ascent Altimeter with a Sun Company compass and thermometer a fully-analog Climate loadout. Easy-to-Read Scale - Easily measure altitude up to 15,000 feet. Barometric pressure is measured in inches of Mercury (Hg). Keep it in your car, truck, or vehicle to keep track of altitude changes while driving. Full Instructions Included - Easy step-by-step instructions help you learn how to set and adjust your Sun Company altimeters/barometers.