Clock - inv. 3418

Johannes Wendelinus Hessler

Projection and Nocturnal Clock
c. 1680
iron   wood  
740 x 440 x 340 cm
"Johannes Wendelinus Hessler fecit Romae"
Inv. 3418

Clock and Watch Room

This nocturnal clock has an ebony case in the unusual form of a monstrance. Around the circumference of the large dial runs a broad band of the hours, pierced to enable them to be read in the dark with an internal light source. The central disk also has a pierced eye which projects the hours onto a wall, again thanks to the internal light source. The other smaller dials indicate the months, the days, the phases of the moon and the astrological triangulations