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Enquiry from Online Galleries regarding "Mahogany stick barometer signed Joshua Springer."
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Look at what I found on the Online Galleries website!
The pine carcase is veneered in mahogany with holly and ebony stringing on all edges. The turned cistern cover has an ebony and bone centre, which is held in place by two brass pins. Removal of the cover reveals the boxwood cistern with the brass set screw which when tightened pushes on the leather bottom pushing the mercury to the top, removing the vacuum and rendering the barometer safe for travel.
Joshua Springer was one of only a few scientific instrument makers in late 18th century Bristol. Since Tudor times the important maritime City had produced a number of notable navigational instrument makers but there was a decline in influence with the death Sebastian Cabot in 1557. Joshua Springer succeeded John Wright who had been apprenticed in London to Benjamin Cole who had himself been apprenticed Thomas Wright, instrument maker to maker to The Prince of Wales, later to be George II. In 1756, John Wright was able to advertise himself as "..the only mathematical, philosophical and optical Instrument-maker in Bristol." In 1759 Springer is recorded as running Wright's shop at Hadly's Quadrant in St Stephen's Lane where he sold a variety of instruments. By 1774 he had moved to 2 Clare Street which in turn became R & C Beilby from 1808.
|Height||92.00 cm||(36.22 inches)|
|Width||12.00 cm||(4.72 inches)|
|Depth||6.50 cm||(2.56 inches)|