Photograph with a caption that reads: '144907. Etablissements Beaudouin. Microforge of Monsieur de Fonbrune. The Microforge consists of four main units. The microsope and its light source, the heating source and associated motors, the vice for holding the micro-instrument in position and to control its position in the field, and the base casing in which ancillary equipment is contained. Designed for Research Workers'