方ほう位い磁じ針しん

noun

magnetic compass

A compass that uses a magnetic needle to indicate direction. Often used in educational or technical contexts; 方位磁石 (ほういじしゃく) is a common synonym.

See also: 方位磁石

• 方ほう位い磁じ針しんを使つかって北きたの方ほう角がくを確