Lovely Art Deco style small pattern barograph finished in smart electro-plating and black lacquer. Retailed by Dipl-Optiker, Bochum, Kortumstr. 91 Germany, circa 1935. The clockwork mechanism is housed not in the drum but actually fitted below the movement and wound through a hole in the base. There is a tiny semi-circular thermometer to the front. Charts and will be Supplied.