How to use the measuring instrument:
When the wheel rolls between two points on the map, the distance measuring pointer rotates accordingly. Record this value according to the corresponding scale, and multiply it by the scale factor to obtain the actual distance between the two points, which is more accurate than the straight-line distance measured by a ruler. Many; the map range finder is convenient and quick to measure the mileage and distance, and is specially used to measure the actual distance of the curved route on the map.
Net weight 20.6 grams Gross weight 24.5 grams 9.5*5*1.5cm packaging size, product size 9.5*4.5*1cm, white box packaging
Precautions:
1. Use in a horizontal state to ensure accuracy as much as possible;
2. In order to avoid confusion of the magnetic needle, please keep a certain distance from the barbed wire and objects containing magnetism during use;
3. Do not hit the object with the surveying ruler, so as not to affect the measurement accuracy;
4. The disk surface and lens should be kept smooth and clean, do not wipe with dirty cloth or hands;
5. It should be closed when not in use and placed away from ferromagnetic materials to avoid loss of magnetism.