Heinz Mundschau, Bernard Roobaert, Richard Watkins
Documents Concerning Christin, June 2014
This book contains facsimiles and translations of all documents written by and referring to Christin that we know at the time of writing.
It includes the description and diagram of a self-winding (automatic) watch which was unknown until now.
In addition, there are descriptions of other inventions: a watch escapement, an eight-day watch,and a correspondence system (telegraph system).
To download click Here