[Rockin Robbins]

I'm making another video of the Dick O'Kane Sonar Only technique some time soon. I borrowed a microphone last night and it sounded like a 1940's AM radio: not acceptable. Really there is nothing at all to be gained with a stadimeter reading. Sonar gives much more accurate (capitalize that. It's many times better.) range information than the stadimeter.

Where you might actually want to take a peak is right when you fire to get a perfect shoot bearing. On bearings, the periscope is more accurate than sonar.

So: your most accurate instrument for range is sonar or radar.

Your most accurate instrument for bearing is radar or periscope.