Perpetual calendar, English, 1822-1869.
Image number: 10412938
This calendar was designed for calculating the time of parturition (childbirth) and is made out of wood and ivory. The outer wheel is divided into four parts labelled: Conception, Quickening, Foetus Viable, and Parturition. It was manufactured by Ferguson at St Bartholomew's Hospital, London.
- Image number:
- 10412938
- Credit:
- Science Museum/Science & Society Picture Library
- Date taken:
- 30 October 2003 10:43
- Image rights:
- Science Museum
