Classic 1960s Barograph by Casella, London

A lovely classic, clean and crisp 1960s barograph in a medium polished mahogany case by Casella Ltd, London, in excellent working condition. It has bevelled glass to the lift off lid and a chart drawer to the base. The brass maker's plaque could be reversed and engraved for a presentation. A quantity of weekly charts is included together with a fresh bottle of special blue recording ink and a reprinted 1930s pamphlet by Negretti & Zambra describing operating instructions and how to interpret typical chart recordings.