资讯

Rotate the compass dial until the orientating arrow is lined up with the red magnetic needle. As long as the orientating arrow and red magnetic needle remain aligned, the direction of the travel ...
Ergonomic Design: Sportnerr compass increases the reading's accuracy with a lens on the rear sight that magnifies the card dial – so you'll always get an accurate reading. Please keep the ...
To use the compass to stay on track, tap the compass dial to mark your current direction. Once you start moving, the red line will signify how far off course you've gone. Once you've opened the ...
Ergonomic Design: Sportnerr compass increases the reading's accuracy with a lens on the rear sight that magnifies the card dial – so you'll always get an accurate reading. Please keep the ...
Earliest records show a spoon shaped compass made of lodestone or magnetite ore, referred to as a "South-pointer" dating back to sometime during the Han Dynasty (2nd century BCE to 2nd century CE).