国立科学博物館
In 2004 the Japanese government funded a project aimed at making a copy of this clock. More than 100 engineers joined the project and it took more than 6 months with the latest industrial technologies. However, even then it was not possible to make exact copies of some parts, such as the brass metal plate used as its spring, before the presentation at Expo 2005. The original clock is displayed at the National Museum of Nature and Science, while a copy is at Toshiba Corporation.