This is a nice display barograph in traditional form by Casella, London, dated June 1983 and originally sold to a Baptist Church in Edinburgh. Fully working, sensitive, modern movement combined with original 19th Century design. Interestingly the clockwork function has a option for weekly or daily rotation. A quantity of charts supplied. See copy extract from Casella trade catalogue 1984 describing this instrument.
Traditional Display Barograph, Casella, London