Jason Clarke Antiques has dated this piece to the 1910s.
Using the direction of the wind and barometer reading it became possible for the user to be able to forecast changes in the weather for the coming 12 hours. Variations in readings can also be set to allow for seasons or time of year.
This example is in fine condition with its original faux snakeskin card box and instructions still affixed to the inside of the lid.
Jason Clarke Antiques has dated this piece to the 1910s.
You can view the stock and full dealer information on the Jason Clarke Antiques Profile Page