Marine Barograph Richard Frères

19th century
Other style
From: 37051, Bovolone VERONA , Italy

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    Aneroid barograph signed RF Richard Frères Paris, Patented SGDG n. 70802, from the end of the 19th century.

    In 1876, Jules Richard took over his father's manufacturing business in Paris. In 1882, he went into partnership with his younger brother Max, who took the name Richard Frères. Although the company was dissolved in 1891, the monogram "RF" was retained as the symbol of the company. Towards the end of the 1800s, Richard shifted his interests to the field of photography and photographic tools. His brother also took an interest in photography and film, becoming a partner of Léon Gaumont in founding the famous film company.

    The barograph is a measuring instrument that records atmospheric pressure values and deduces the trend to make atmospheric forecasts. The sensitive element which determines atmospheric pressure variations is made up of eight aneroid capsules. The deformation of the capsules, with their contraction or expansion according to pressure changes, is amplified by a system of levers; these variations are then recorded on a diagram sheet using an inked pen.

    The barograph is mounted in a mahogany case.
    The mechanical drum is equipped with an internal cylinder escapement that allows an 8-day rotation. Key included.

    Measurements: 29x13cm H: 15cm

    Payment: Paypal, Bank transfer

    Shipping by express courier in France included.

    To see the video of the operation, click on the link below:

    Ref: AEN5PYQ4B7

    Style Other style (Scientific instruments of Other style Style)
    Century 19th century (Scientific instruments 19th century)
    Country of origin France
    Shipping Time Ready to ship in 4-7 Business Days
    Location 37051, Bovolone VERONA , Italy

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