A fact from Rule of marteloio appeared on Wikipedia's Main Page in the Did you know column on 6 August 2011 (check views). The text of the entry was as follows:
Did you know... that Italian sailors in the Middle Ages used trigonometry and the rule of Marteloio(pictured) to navigate at sea?
This article is within the scope of WikiProject Maps, a collaborative effort to improve the coverage of Maps and Cartography on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MapsWikipedia:WikiProject MapsTemplate:WikiProject MapsMaps articles
This article is within the scope of WikiProject Transport, a collaborative effort to improve the coverage of articles related to Transport on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TransportWikipedia:WikiProject TransportTemplate:WikiProject TransportTransport articles
This article is within the scope of WikiProject Middle Ages, a collaborative effort to improve the coverage of the Middle Ages on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Middle AgesWikipedia:WikiProject Middle AgesTemplate:WikiProject Middle AgesMiddle Ages articles
