Carved wooden barometer by Righi Milan, carved with vegetal and floral elements . This scientific instrument used to measure atmospheric pressure , is a wall model , consists of a vertical element , a wooden case containing a thermometer with a circular quadrant and, in the lower part,  relative  pressure variations.  This antique Italian barometer is made by Gaetano Righi , Milan. Minor loss in the lower part, it dates back to the early decades of the twentieth century .