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Map planimeter for measuring actual distances and areas on maps.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...l_fullsize.jpg
Previously:
Early personal and in-car navigation - photos
ancient Chinese south-pointing chariot
Map planimeter for measuring actual distances and areas on maps.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...l_fullsize.jpg
Previously:
Early personal and in-car navigation - photos
ancient Chinese south-pointing chariot
Last edited by Jon; Jan 18, 2020 at 07:35 PM.
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