"The Tale of Cross-eyed Lefty from Tula and the Steel Flea", The Tale of the Crosseyed Lefthander from Tula and the Steel Flea or simply Levsha, variously translated as The Lefthander, Lefty, The Steel Flea or The Left-handed Craftsman is a well-known 1881 skaz (story) by Nikolai Leskov. Styled as a folk tale, it tells a story of a left-handed weapons craftsman from Tula (traditionally a center of the Russian armaments industry) who outperformed his English colleagues by providing a clockwork steel flea they'd made with horseshoes and inscriptions on them. (Wikipedia, CC BY-SA 4.0)