スライドルール

noun

slide rule

A mechanical analog calculator; the Japanese term 計算尺 is far more common. This loanword is rare and mostly used in historical or technical contexts.

See also: 計算尺

• 昔むかしの技ぎ術じゅつ者しゃはスライドルールで計けい算さんしていた。

  Engineers in the old days used to calculate with slide rules.