Sonar Ruler for iPhone Measures Distances Using Sound
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Posted August 21, 2009 at 1:29pm by iClarified · 36500 views
Sonar Ruler is an experimental app that uses echoes to measure distances with your iPhone.
It uses the same principles that dolphins use to find food. It sends a short pulse from the speaker and measures how long that pulse takes to bounce off of something and return to the phone. It then estimates how far away you are.
Feautres: - Sonic distance measurement up to 60 feet - Sets Units to feet, inches, or meters - Custom saved settings measuring in different environments
You can purchase Sonar Ruler from the App Store for $.99.
The link you provided is wrong. It links to SONIC Ruler which requires you to use your headphones to measure. The link to SONAR Ruler is here:
http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=324621243&mt=8