Measuring method of use:

When the roller rolls between two points on the map, the ranging pointer turns accordingly, records this value according to the corresponding scale, multiplied by the proportional coefficient, which can not only obtain the actual distance between two points, it is much more accurate than the straight line distance measured by ruler; It is convenient and fast to measure mileage distance by map rangefinder, which is specially used to measure the actual distance of curved route on map.

Matters needing attention:

1. Use in a horizontal state to ensure accuracy as much as possible;
2. To avoid magnetic needle disorder, please keep a certain distance from barbed wire and magnetic objects when using;
3. Do not use surveying and mapping ruler to knock objects, so as not to affect the measurement accuracy;
4. Keep the disk surface and lens bright and clean, do not wipe with dirty cloth or hands;
5. When not in use, close it, and place it not close to ferromagnetic substances to avoid loss of magnetism.

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