Description
1. Thermometer: Measure the ambient temperature. -20-60 ° C
2. Hygrometer: Measure the relative humidity of the environment.
3. LED lights: convenient for you to use at night. Replace the battery:
1 remove the magnifying glass and ruler 2 loosen the three screws 3 replace the battery
4.Reflector: Ask for help in the countryside, reflect the sun, and send a bright signal.
5. Spirit level: determine the level condition
6. Compass: Measurement of magnetic azimuth the relative function of the compass to acquire data at the horizontal and vertical levels.
7. Whistle: Call for help in the countryside, send a signal, use the tappet to push the whistle from the third hole on the left
8.Magnifier: Find a coordinate on the map.
9.Ruler: Measuring distance.
