P A Oxley Antique Clocks & Barometers has dated this piece to the 1800s.
The integral thermometer is calibrated from -10º to 120º Fahrenheit and is also engraved with the makers name, place of work and the typical weather indications used at this period.

The mahogany case has an exposed mercury tube, with a turned cistern cover to the base. The glazed access door is surmounted with an architectural pediment and a central brass finial. Both the access door and trunk of the case are inlaid with ebony and boxwood stringing.
Note: Jacopi of Salop is listed as working between 1800-1840. Salop being the old spelling of Shrewsbury in the county of Shropshire.
P A Oxley Antique Clocks & Barometers has dated this piece to the 1800s.
You can view the stock and full dealer information on the P A Oxley Antique Clocks & Barometers Profile Page
P A Oxley Antique Clocks & Barometers is a registered member of LAPADA