10 In 1 Multifunction Outdoor Survival Military Camping Hiking Compass Tool Kit

10 in 1 Multifunction Outdoor Survival Military Camping Hiking Compass Tool Kit. 1.Compass: Measure for magnetic azimuth (Relative functions of compass: acquire data at horizontal and vertical level) 2.Thermometer: Measure for ambient temperature 3.Hygrometer: Measure for ambient relative humidity 4.LED light: Lighting 5.Reflector: Call for help in country-side, reflect sunlight to sent out the light signal 6.Spirit level: Determine level condition 7.Whistle: Call for help in country-side, sent out the sound signal. (use tappet to push out the whistle from the third hole at the left side) 8.Flint: Wilderness survival by make fire. 9.Magnifier: Find a coordinate in a map. 10.Ruler: Measure a distance (3cm length) Dimensions (L x W x H): 80 x 40 x 25 mm