出典:Wikipedia
出典:『Wikipedia』 (2010/11/08 16:48 UTC 版)
The Monstrance clock, or mirror clock, developed during the Renaissance. The monstrance was a cross-shaped gold or silver vessel which played an important part in church ritual and often incorporated sacred figures as part of the design. The clock made use of a rotating ball at the top or in the base to indicate the time of day. Monstrance clocks and crucifix clocks remained fashionable until the eighteenth century.