This early 20th-century French chrome barograph, signed LM for Léon Maxant, serves as both a functional recording barometer and an elegant instrument for enthusiasts of meteorological precision.

The device features a revolving drum equipped with an eight-day clockwork mechanism, designed to track barometric pressure changes over a weekly cycle. The instrument is housed in an exceptionally well-preserved chrome-plated case, which includes a hinged lid with bevelled glass panels and a secure spring-button locking mechanism. The base bears the Léon Maxant trademark—an "LM" flanking an anchor—along with the serial number 344477

Technically, the barometer utilizes a three-capsule vacuum system with a fibre-tip nib on the recording arm. The drum-contained clock movement is key-wound using the key and the mechanism has been fully overhauled

Dimensions: 13.5 cm (H) x 20 cm (W) x 12 cm (D).