胖Pungo狗 @ Mon Jan 23, 2017 3:18 pm 写道: 指南针怎么用是关键,再好的,也不要太相信它,一定要让它多指几次,轻轻摇动,放平,去掉一个最左边,去掉一个最右边,剩下的三次,取个平均值,基本不会走到对岸去了。
" 轻轻摇动 "
that's why jewel bearing rules.....no jamming of the pointer axle (needle/bearing pin)

(picture of a watch needle/bearing pin with similar jewel bearing that a quality compass is preferred to have)






