水みず秤ばかり

noun

water level; hydrostatic level

A tool that uses water to determine a horizontal plane, similar to a spirit level but employing water instead of a bubble.

• 昔むかしの大だい工くは水みず秤ばかりを使つかって水すい平へいを取とった。

  Carpenters of old used a water level to establish a horizontal line.