17th century Sand Glass
The SAND GLASS, also known as CLEPSAMMIA, measures time by how long sand takes to filter from the upper bulb into the lower ; different apertures measure different periods
Picture No
10052553
Media ID
47216418
Size
2661px x 4629px
(2.3MB)
Credit
Mary Evans Picture Library
Source
cigarette card by an unnamed artist in Morris's series Measurement of Time' (1924)
Date
17th century
