Late Eighteenth Century Mahogany Stick Barometer by Gilbert London black glass artifical horizon Unless further evidence comes to

Unless further evidence comes to light

John Gilbert (II) is also one of the few London makers that also had a contract arrangement with the Dollonds’ for selling their patented achromatic lenses and this was certainly the case by 1764

effectively leading to the birth of the Admiral Fitzroy’s Storm Barometer

with the aid of more than 130 illustrations

The case also contains a further trade label to the Victorian London instrument makers

Late Eighteenth Century Mahogany Stick Barometer by Gilbert London black glass artifical horizon Unless further evidence comes toFor sale, a Late Eighteenth Century Mahogany Stick Barometer by Gilbert of London. A simply designed yet beautifully robust example comprised of a solid mahogany backboard with domed top and base. The inset bone scale plate is engraved with weather indications to the left and and a scale to the right measuring 27 to 31 inches of barometric pressure with a sliding Vernier incorporated for fine measurement. The head of the scale is simply engraved with