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

Unless further evidence comes to light

The engine is comprised of a single cylinder driving a ten inch cast iron flywheel with a Watt regulator

Note: This busy and somewhat confusing period of the Gilbert family history is ripe for more interrogation

with the aid of more than 130 illustrations

the seller of this fine set

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