A fine and rare, possibly unique barograph/clock/thermograph in oak made by Negretti and Zambra, in Art Deco style, circa 1930. Consisting of a miniature barograph and thermograph with the centrepiece of an 8 day clock all signed by Negretti and Zambra. This could have been a special commission and may have been manufactured for a client in Spain as there are some charts in Spanish. The barograph and thermograph movements both have hinged lids with bevelled glass and neat individual chart drawers below. The clock has an eight day movement. An exceptional working instrument.