辨認方向用嘅工具，裏面有磁石做嘅指針，可以自由旋轉，擺定就會見到枝針一邊指住南邊，另一邊指住北邊（量詞：支／個） (compass; literally: point south needle)
名詞最早嘅指南針由中國人發明。
zeoi3 zou2 ge3 zi2 naam4 zam1 jau4 zung1 gwok3 jan4 faat3 ming4.
The earliest compass was invented by Chinese.
辨認方向用嘅工具，裏面有磁石做嘅指針，可以自由旋轉，擺定就會見到枝針一邊指住南邊，另一邊指住北邊（量詞：支／個） (compass; literally: point south needle)
名詞最早嘅指南針由中國人發明。
zeoi3 zou2 ge3 zi2 naam4 zam1 jau4 zung1 gwok3 jan4 faat3 ming4.
The earliest compass was invented by Chinese.
compass (Classifier: 個／个 m c mn)
中國四大發明，即指南針、火藥、造紙術和印刷術
the Four Great Chinese Inventions, i.e. the compass, gunpowder, papermaking and printing