Jason Clarke Antiques has dated this piece to the 1920s.

Comitti remain a renowned name in clockmaking and have a history that stems back to the mid nineteenth century when Onorato Comitti emigrated to the UK. The company rose in fame and by the end of the century had received the Diploma of Honour for their clockmaking skills. They did however provide scientific instruments such as barographs and barometers as part of their stock in trade.
Gluck were also a prolific provider of barograph parts to high end scientific instrument manufacturers of the period. Their mechanisms are commonly encountered on Negretti & Zambra barographs.
Jason Clarke Antiques has dated this piece to the 1920s.
You can view the stock and full dealer information on the Jason Clarke Antiques Profile Page