This is simple virtual Ruler app.
How to use Ruler to measure length:
Put your finger on screen and slide phone with the other hand.
Pull arrow down to reel off.
Watch video and little practice and you may get 1% accuracy.
How to use Ruler to measure length:
Put your finger on screen and slide phone with the other hand.
Pull arrow down to reel off.
Watch video and little practice and you may get 1% accuracy.
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