P A Oxley Antique Clocks & Barometers has dated this piece to the 1800s.
The mahogany case with ebony line inlay, exposed mercury tube, turned mahogany cistern cover and rounded top.

Note: Jacob Abraham was working in Bath from 1805 to 1841. He also owned premises in Cheltenham. He is listed as an important Maker and was Instrument Maker to the Duke of Gloucester and the Duke of Wellington.
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