Appearance:      Lantern clock on wooden pyramid stand.

Dai Dokei

Period:               Early to Middle, but also later period.

Escapement:     Single and double foliot; late examples possibly with balance wheel.

Power Source:   Lead weight

Construction:    Lantern with square or rectangular pillars. Early iron / later brass.

Yagura-dokei utilise the same style lantern clock as the dai-dokei, but the stand is more robust and is intended to sit on the woven tatami mats, rather than in a tokonoma (alcove).  The stand design was more likely to tolerate earthquakes (several wadokei on dai-dokei stands are known to have fallen off their bases in Tokyo during the 2011 earthquake).