Early 1900s small pattern barograph by Negretti and Zambra, London. This instrument is quite unusual as most small barographs have only one or two glass panels with a carry handle on top of a hinged lid. This one has 5 glass panels and a lift off lid to gain access to the movement. In excellent condition, probably made by Richard Freres of Paris and imported to UK by Negretti. Charts and fresh bottle of ink supplied.
Negretti and Zambra, London, small pattern barograph.