Mahogany cased antique barograph in good, working condition. The design of the movement and the form of the clock with its patent number mean that it's almost certainly by the well-known firm of Short & Mason. There is no provision for a clamping bar for the charts, which means that the clock drum is of the type that uses charts with an adhesive strip. There are still 5, of these in the drawer but they are very old and quite dirty.
New charts like these are easily available and I've found that charts without an adhesive strip can be attached using something like "Pritt" to hold them in place. The original ink bottle is with the instrument but new ink will probably be needed. The glazed cover is the most unusual feature of this barograph. I've owned many barographs but I'd never seen one quite like this before.
Only the top panel is beveled, the other four glass panels are plain. I'm sure this is how the instrument left S&M originally and that the plain panels are not replacements.Each of the glass side panels is old, the glass is slightly "wavy" and there are one or two bubbles in the glass. I can only think that this model was slightly cheaper than one where all five panels were beveled.
It's a fact that when looking at a barograph, it's generally only the bevel of the top glass panel that is obvious. Also, the cover is a lot lighter when made in this way. The barograph weighs 4.2kg unpacked so I doubt I can keep it under 5kg when packed.
Pick-up from Chepstow would be a good option. The item "Mahogany cased antique barograph almost certainly by Short & Mason" is in sale since Sunday, September 27, 2020.
This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "weather_watch" and is located in Chepstow. This item can be shipped to United Kingdom.