1. Material is of aluminum alloy and glass;
2. Special design of fluorescent light, you can 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