Nocturnal Dial Key Ring shell The original is in the

The original is in the History of Science Museum in Florence

The phenomena of binocular vision has been studied by the early scientists  Euclides

This projection was successfully applied in a new type of astrolabe that offered remarkable advantages over its predecessors because it could be used in any Northern latitude

This reproduction of an early optical device employing the phenomenon of "Retinal Persistence" or Image Retention" is a fine piece for explaining how animated movies work

One of most popular sundials of 17th

Nocturnal Dial Key Ring shell The original is in theThis is a replica of a Nocturnal and Tide Computer from 1570 signed by Humphrey Cole. Cole was the first maker of English instruments having learned the craft from Flemish immigrants in the final years of the Tudor dynasty. The original can be found in the British Museum, London. Legend has it that the Nocturnal Astrolabe was invented by Raimund Lill to administer doses of medicine to patients during the night. The Nocturnal is a star clock used to