A fine early 19th century dated mahogany 'double barometer'
Knie, Edinburgh, dated 1801
The rectangular boxwood and ebony case with swan neck pediment and moulded base, the signed silvered 28 to 31 inch scale mounted within a moulded and banded border, the 'U' shaped tube with mercury in the left hand section, meeting with the oil filled section in a secondary reservoir. Signed 'Made by Mr Knie, Edinbr 1801' 104cm (41in) high.
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