Oak case with carrying handle with hinge to the side opening to reveal a stack of five vacuum disc bellow. Drum with eight day movement with brass fittings. Base stamped with maker’s marks and 17249. 7in x 4in x 5in (17.5 cm x 10cm x 12, cm) high together with a collection of Negretti & Zambra barograph papers (on disc).
Richard Brevetes, Contructors Brevetes (SGDC), Paris, Made in France