English mathematician whose main work was in the field of horology.
Designed and made instruments, including sundials and astrolabes.
- Born: c. 1561, Earley, Berkshire, England
- Died: 9 August 1611, Southcote, Berkshire, England
- 1585: The Mathematical Jewel
- 1590: Baculum, Familliare Catholicon sive Generale
- 1596: Astrolabium Uranicum Generale
- 1609: The Art of Dyalling