Perpetual calendar, English, 1822-1869.

Perpetual calendar, English, 1822-1869.
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
 
Currently on display in:
The Science and Art of Medicine
Year made :
1822-1869
Inventory number :
A615358