Last Updated：2025/12/08

(historical, slang) The Curta, a cylindrical hand-held mechanical calculator invented in the 1930s.

音声機能が動作しない場合はこちらをご確認ください

See correct answer

math grenade

Source Word

math grenade

historical slang

(historical, slang) The Curta, a cylindrical hand-held mechanical calculator invented in the 1930s.

Japanese Meaning

（歴史的なスラング）1930年代に発明された円筒形の携帯型機械式計算機「キュルタ」を指す

During the mountain survey, he relied on his old math grenade to perform precise calculations.

山岳測量の間、彼は精密な計算を行うために古いクルタ手回し計算機を頼りにした。

Sense（1）

(historical, slang) The Curta, a cylindrical hand-held mechanical calculator invented in the 1930s.

math grenades

（ plural ）