1. Material is of aluminum alloy and glass;
2. Special design of fluorescent light, you can use it and read data on it in dark environment after absorbing enough sunshine.
3. With an clinometer, easy to measure an angle of inclination;
4. Waterproof and shake-proof, suitable for motoring, boating, camping, mountaineering, exploring, hunting and other outdoor activities;
aluminium alloy and glass
With inch and cm ruler