In Tokametsuke, an Andon (a paper-covered lamp stand) was lit in a dark room, and a reasonable number of holes were pricked on its parts made of Washi (Japanese paper), and from a distance, the numbers of those holes were counted.
暗い部屋で行灯に火をらせ、和紙の部分に針で穴を適当な数だけ開け、その穴を遠くから数える。