![](https://coimages.sciencemuseumgroup.org.uk/46/351/large_thumbnail_1908_0097__0002_.jpg)
Robert Were Fox
- occupation:
- Inventor
- Nationality:
- British
Dip circles were frequently taken on scientific expeditions from the 18th century onwards. R W Fox introduced a variation in design in 1834, to allow for use on a moving ship and the measurement of magnetic force as well as dip.