Siphon barometer mounted on a wooden board protected by a glass window and a smaller wooden shutter. Next to the barometric tube is a thermometer, whose bulb is broken, surmounted by the caption "Le Grand Thermometre de Florence." The barometric scale, the thermometric scale, and the captions in three languages (Italian, Latin, and French) are printed on paper. Two recording pointers slide along a pair of vertical metal wires. The instrument, similar to barometers inv. 1142 and inv. 3267, is signed by Giovanni Domenico Tamburini, about whom we have no information.