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Walk on the trace of the mythic Egyptian and Maya civilizations with PlumbString.
Use the tool that allowed them to build incredible edifices, but now in a handy and hi-tech way !
Just place your iPhone/iPod Touch on your walls to check if they are perfectly up-right. See how far move the plumbString from the origin position, and check the digital angle value !
Correct the error of your accelerometer with the calibrate button !

Take your iPhone/iPod Touch up side down in your palm, slightly rotate it (to the left or the right) and transform PlumbString into a fake detector !

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