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Soil Tester by Molly Ellison

An engineer volunteering for the day explains how to a group how a soil quality tester works.

Soil Tester by Molly Ellison

Technical Details

Posted on February 22, 2011
Camera: Canon EOS DIGITAL REBEL XT
Aperture: f4.5
Shutter: 1/50
ISO Speed: 400
Focal Length: 18mm
An engineer volunteering for the day explains how to a group how a soil quality tester works.

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