IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. David Rittenhouse (1732-1796) was ...
There are a surprising number of clocks throughout Drexel University’s campuses. Among the clocks in the Drexel Founding Collection is the famous David Rittenhouse astronomical, musical tall-case ...
The dial -- The left hand side of dial -- The sun - moon dial -- Repeat and strike selector -- Moon elliptic orbit and node indicator -- Right hand side of dial -- Equation-of-time indicator -- Manual ...
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