Richard Frères Aneroid Barograph, Manufactured in France Circa 1920. Working

Attractive aneroid barograph for marine use manufactured by Richard Frères brand circa 1920. This is a beautiful vintage item that has survived to our days in perfect condition and working like new. The mahogany wood the frame and the cover are made of has been carefully restored and looks wonderful, boasting the nice reddish tone that characterizes this noble specie. This barograph also keeps the original glass panes that close the sides and the rest of the mobile components and gears that are part of the mechanism. The article also preserves the original winding key.Barographs are instrument designed to measure atmospheric pressure in order to predict possible changes in the weather. This makes them practical and very popular instruments for naval use. This particular one is an aneroid barograph whose mechanism registers the pressure changes through the dilatation and contraction movements undergone by a sealed bellow located into the urn. A metal pointer with an ink deposit at the tip is connected to de bellows disks and transfers the mentioned movements to a graphic paper roll. The barographs clockwork movement rotates the roll.The instrument sits on a wooden plank where the brass base is embedded. In the center of the base we can see the engraved Richard Frères (RF) monogram together with the inscripcion BREVETES SGDG PARIS and serial number 109908. This detail indicates that the instrument was manufactured by company Richard Frères, founded in 1882 by Jules and Max Richard.This lovely marine barograph is undoubtedly a beautiful item whose good working order turns it into an exclusive piece with what any lover of marine antiques will fall in love.Measurements: Width: 195 mm. Height: 155 mm.