1931 Small aneroid barometer with open dial and similar items

This brass barometer features a brass bezel and an open center dial that reveals the exquisite barometric movement and aneroid capsule. The dial is covered with thick glass with a beveled edge. The barometer is designed for panel mounting. French inscriptions on the dial, double scale. Made in France by Marti. Engraved on the back cover S. Marti Monbeliard and GRAND PRIX PARIS 1931. You can see the product in action on my YouTube channel AntiqueClocksDepot https://youtube.com/shorts/RS4ybaH6vpc The body has some wear Condition: good vintage working condition Dimensions: dial diameter 7.5 cm (2.9 in), base diameter 9 cm (3.5 in) Weight: 413 gr Important: The age of the piece is determined approximately. Any statements by me as to the authenticity, attribution, description, date, age, provenance, title, or condition of the work constitute my judgment and opinion only. Color may vary slightly depending on screen settings and minor surface scratches. Please study the photos that are an integral part of the description. The item is in working order. However, since this is an antique, it is being sold with no guarantee of accuracy The product is in working order, however, the barometer is not sold as a measuring instrument, but as a unique antique artifact and interior item.