Huge Thermograph by Richard Freres, Paris

This is a very large and heavy thermograph by renowned French manufacturers, Richard Freres, Paris. The serial number 46958 suggests it would have been made around 1904. The top cover is missing and the instrument requires some attention to get it going. The clock runs for a few hours and looks like it could do with a good clean. A very imposing early 20th century recording instrument which would make an interesting display item.