Hero, The Younger
HERO, THE YOUNGER, the name given without any sufficient reason to a Byzantine land-surveyor who wrote (about A.D. 938) a treatise on land-surveying modelled on the works of Hero of Alexandria, especially the Dioptra.
See " Geodesic de Heron de Byzance," published by Vincent in Notires et extraits des manuscrits de la Bibliotheque Imperiale, xix. 2 (Paris, 1858), and T. H. Martin in Memoires presentes a I' Academie des Inscriptions, 1st series, iv. (Paris, 1854).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)