An orrery is a mechanical device that illustrates the relative positions and motions of the planets and moons in the Solar System in a heliocentric model. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to the Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
Tellurium (Dep. SBAS, Firenze), Copernican planetarium model to illustrate terrestrial and lunar revolutions around the Sun. Attributed to Charles-François Delamarche. The device can be hand-operated by means of a gear system to simulate the motions of the celestial bodies with varying degrees of approximation. Delamarche produced similar models in the early nineteenth century. There is a similar instrument in the collection of the Osservatorio Ximeniano, also in Florence.
Marvelous!!! Handmade by Peter Goebel. Made with brass covers and genuine ivory pages, it is similar to Thomas Jefferson's, but with the addition of a pencil. The four pages measure about 5/8" by 4". The ivory used is taken from recycled piano keys which are approximately 150 years old. The overall size is about 1" wide by 4 1/2" long. The pencil takes a 1/8" lead (included) and holds the notebook closed in your pocket.
The Black Death Plague Doctor: A plague doctor was a special medical physician who saw those who had the Bubonic Plague. In the seventeenth and eighteenth centuries, some doctors wore a beak-like mask which was filled with aromatic items. The masks were designed to protect them from putrid air, which (according to the miasmatic theory of disease) was seen as the cause of infection. The protective suit consisted of a heavy fabric overcoat that was waxed. A wooden cane pointer was used to he...