Engraving depicting a gravity driven clock: a short cylinder with a dial at one end travels down an helical path. The pointer shows the fractions of an hour on the dial and the hour itself is indicated on the helix. Dated 18th century
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DETAILS
Image Number: 1746-29954072Rights ManagedCredit Line:World History Archive/Image Asset Management/SuperStockCollection:Image Asset Management Contributor:World History Archive Model Release:NoProperty Release:NoResolution:4000×5243
