Gadgets you can make and use to back up your GPS Issue 38 : Sept/Oct 2004 Here are three navigation aids you can use when your GPS isn’t working or to reinforce old time-tested methods of navigating. ...
Browsing Tag: Jack Dillon
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Gadgets you can make and use to back up your GPS Issue 38 : Sept/Oct 2004 Here are three navigation aids you can use when your GPS isn’t working or to reinforce old time-tested methods of navigating. ...