* The Rittenhouse Orrery: This was a complex mechanical model of the solar system, considered to be the most accurate of its time. It demonstrated the motions of the planets and other celestial bodies, and played a significant role in advancing astronomical understanding.
* The Transit Instrument: This device was used to observe the precise moment when a celestial body crossed the meridian, which is an imaginary line running from north to south through a point directly overhead. This was essential for accurate timekeeping and astronomical calculations.
* Improved Telescopes: Rittenhouse contributed to the design and construction of telescopes, improving their accuracy and capabilities.
Other inventions and contributions:
* He also made significant contributions to surveying and land measurement.
* He played a key role in the development of the United States Mint.
* He served as the first director of the United States Mint.
* He was a founding member of the American Philosophical Society.
David Rittenhouse was a prominent figure in the American Enlightenment and made important contributions to science, technology, and public life.