This beautiful little mahogany cabinet is a printer for 4.5 X 10.7 mm stereo plates. A clock mechanism starts up when the inactinic glass is raised. An electric lamp is placed at the back to provide this light for the time necessary for a good exposure. The selected time is visible via the arrow behind the glass / graduated display in seconds. This printer was built by Richard - frères-in Paris on the basis of the Chauvelon-Richard patent.