磁じ石しゃく式しき電でん話わ機き

noun

magneto telephone; hand-crank telephone

Historical term for an early telephone that used a hand-cranked magneto to generate ringing current. Now mainly encountered in museums or historical contexts.

• この博はく物ぶつ館かんには磁じ石しゃく式しき電でん話わ機きが展てん示じされている。

  A magneto telephone is on display at this museum.