Galileo's Instruments of Discovery
With these various instruments, Galileo Galilei was able to look into space and change our view of the universe.
- By Sarah Zielinski
- Smithsonian.com, July 20, 2009
This instrument is inscribed with the words “to find the distance by means of the surface.” It was a device used in surveying. A user could determine the distance of a faraway point by taking measurements from two locations and then using simple geometry. This example dates from about 1560.