Measurement Instrument Usage Method:

When the roller rotates between two points on the map, the distance measuring pointer also rotates, recording the value according to the corresponding scale. Multiplying this value by the scale coefficient can give the actual distance between the two points, which is much more accurate than the straight-line distance measured with a ruler. The map distance measuring instrument is convenient and fast for measuring the actual distance of curved routes on the map.

 Net weight: 20.6g, Gross weight: 24.5g, Size: 9.5*5*1.5cm, Product size: 9.5*4.5*1cm, White box packaging.

Notes:
1. Use in a horizontal state to ensure accuracy as much as possible.
2. To avoid the misalignment of the compass, please maintain a certain distance from iron wire mesh and magnetic objects when using;
3. Do not use a measuring tape to strike an object, which may affect the measurement accuracy;
4. The surface of the disc and the lens should be kept clean, and do not use dirty cloths or hands to wipe.
5. When not in use, it should be closed, and it should not be placed near magnetic materials to avoid the loss of magnetism.