How To
By
eHow Cars Editor
Difficulty: Moderately Easy
Things You’ll Need:
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GPS unit
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Computer with Internet access
Step1
Determine the type of GPS unit that you own. The features of your GPS unit can also help in identifying its accuracy.
Step2
Think about the times that your GPS unit has helped you in finding a location. When your gadget has helped you in locating various places, then you can say that you must have an ideal unit for your tracking needs. This step can also help you know the cases and instances that your item has failed you when you travel.
Step3
Compare your very own GPS unit with other GPS items available in the market. When you are able to determine the differences between your gadget and the other units, you will know the aspects that your GPS item lacks.
Step4
Hop online and find some independently plotted and verified positions around where you live. Make a list of those coordinates and check the accuracy of your own unit’s performance as you drive around and visit them one by one. If they are off a digit or two, that’s not such a big deal but if the position that your unit provides is off by more than that, you may need to upgrade.