English, c.1900, the base plate engraved 'THE JORDAN BAROGRAPH REG'd DESIGN NO 62874' and NEGRETTI & ZAMBRA LONDON No. 30607', the barograph mounted on a large rectangular lacquerd brass base plate with the clockwork mechanism mounted in a rectangular box, to the left, driving the large cylinder via gearing at the base, with 8 bellow stack at the rear with linkage to the pen at the front, all under a polished oak case with beveled glass windows, width 42cm