Lister's Bougie This is a Lister's Bougie, a urethral metal probe. It features a nickel-plated metal shaft with a ring on one end and a bulbous tip on the other. The ring is engraved with the numbers "7," "16," and "10," while the shaft is marked with "Fannin Dublin & Belfast." Signs of wear and tear are present, as the plating is flaking off. Lister's Bougies, named after British surgeon Joseph Lister (1827-1912), are used to dilate the urethra and facilitate the passage of instruments or catheters. They help in diagnosing and treating urethral strictures by gradually increasing the diameter of the urethra. 1925-1975