Kostas Aggelakis collection (Herakleion, Crete) comprises books, maps and artifacts concerning navigation. Especially the collection displays 17 types of speedometers. It also comprises sextants, compasses and other instruments for navigation plotting. The instruments are dating from middle 19th century to middle 20th.century.
Kostas Aggelakis has donated to the Hellenic Archives of Scientific Instruments a Hughes sextant (c. 1938) and two speedometers.
