Shackladys Antiques has dated this Antique Mahogany Barograph Barometer to the 1910s.
The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure.

The aneroid barometer mechanism has twelve stacked vacuum capsules and utilises a gate suspension, a refinement developed to improve sensitivity. The barograph with hinged lid with a silvered carry handle.
Dimensions
Height 11 Inches
Width 15.5 Inches
Depth 7.5 Inches
Shackladys Antiques has dated this Antique Mahogany Barograph Barometer to the 1910s.
You can view the stock and full dealer information on the Shackladys Antiques Profile Page
Shackladys Antiques is a registered member of LAPADA