Ocular Device Found Independence Hall Leads to Map on the back of the Declaration of Independence. Found by Benjamin Franklin Gates Ben with the glasses. The Ocular Device was found with the Masonic Square and compass in a brick at Independence Hall by Ben Gates. It leads the group to New York. Retrieved from "https://nationaltreasure.fandom.com/wiki/Ocular_Device?oldid=7475" Categories: National Treasure Clues Objects Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.