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Acrylic transparent multi-function scale compass map compass
Function introduction
Compass: The oil compass rotates smoothly.
Material: Acrylic
Double scale map ruler: metric cm and inch
Hanging rope: about 45cm in length. Easy to carry.
Precautions for use of compass:

1. Do not close to high voltage lines, electromagnetic devices, iron, cobalt, nickel and other magnetically sensitive substances, so as not to affect the pointing accuracy and magnetic loss.  
2. Do not beat the product with a surveying and mapping ruler to avoid oil leakage due to the breakage of the oil filling compass core, which will affect the measurement accuracy.
3. Avoid scratching the product surface. The product should be kept as bright and clean as possible, and should not be wiped with dirty cloth or hands.