Hourglass in organ case composed of four blown glass vials (for the hour, three-quarters of an hour, half-hour and quarter-hour) each formed by two pear-shaped globes containing white sand with tightly-corded junction rings, sheet metal frame with two hexagonal bases bordered by a parapet with a decorative cut-out joined by seventeen columns, 18th c. 13.5 x 24 x 6.5 cm (some deformation of the metal part, traces of oxidation, cords partly untied, one vial blocked, one column missing) Similar model in the Musée du Louvre, Département des Objets du Moyen Age, de la Renaissance et des Temps Modernes, ref. OA 10190, currently on display in the Richelieu wing, room 531.