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weighted brass is contrived to unscrew from the upper platform with the catalogue images suggesting that it may have had an auxiliary screw to allow for field attachment
the exposed barometer tube runs centrally down the full length of the instrument with half globe mahogany cistern cover to the base and cistern adjustment screw below
Despite the impracticality
Cox was an agent to Robert Brettell Bate for admiralty charts and agent to both John Roger Arnold and Edward John Dent (EJ Dent) as a supplier of their “admiralty chronometers”
“The face of this ingenious instrument closely resembles that of the 5-dial Air Meter
FitzRoy and his Barometers - Philip R. Collins Books on Antique Stick Barometers weighted brass is contrived toTravelling around Cape Horn in stormy weather, the Beagle went under water twice, bobbing up like a barrel, but each time taking on more water; if the Beagle had gone under a third time, it was believed she would have sunk, no doubt with the loss of all life. Her captain, Robert FitzRoy, blamed himself for this near calamity, having not taken enough notice of the falling barometer. He never forgot this incident and became a firm believer in the value
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