A. G. Drachmann

Aage Gerhardt Drachmann (22 October 1891 – 9 April 1980) was a Danish librarian and historian of science and technology, one of the 20th century's foremost experts on Ancient Greek and Roman mechanics.

From 1928–1949 he edited the Index Medicus Danicus, a card-index bibliography of Danish medical literature.

He wrote books on "pneumatic medicine", oil mills, ancient mechanics and Caesar's Rhine bridges, as well as several articles for the Realencyclopädie der classischen Altertumswissenschaft and the Dictionary of Scientific Biography.

[2][3] Drachmann's 1963 book Mechanical Technology of Greek and Roman Antiquity consisted of a critical translation and commentary on Hero of Alexandria's Mechanics (from Qusṭā ibn Lūqā's Arabic translation), alongside study of other works by Hero, pseudo-Aristotle, Vitruvius, and Oribasius.

[4] Drachmann also studied English literature, Danish folk tales and ornithology.