This is a great all round kit for outdoor adventures like hiking, camping, biking and spelunking. It is small and portable, with it, you will have the necessary items for your outdoor adventures.
1.Thermometer: measure for ambient temperature. (-20-60 Degrees)
2.Hygrometer: measure for ambient relative humidity.
3.LED light: it is convenient for you to use at night. Replace battery: (1)take out the magnifier and ruler (2)loosen three screws (3)change battery
4.Reflector: signal for help in the outdoors, reflect sunlight to sent out the light signal.
5.Spirit Level: determine level condition
6.Compass: measure for magnetic azimuth (relative function of compass acquire data at horizontal and vertical level.)
7.Whistle: call for help in outdoors, (use tappet to push out whistle from the third hole at the left side)
8.Flint fire starter: make a fire (use tappet to push out flint form the second hole at the side)
9.Magnifier: find a coordinate on a map, and start a fire.
10.Ruler: measure distance.
Size: About 7.0 x 4.0 x 2.3cm
Color: As picture show