Keson DG20018 Fiberglass Depth Measure 200ft<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>DG20018 10-pack Depth Gauge， 200-ft， feet &amp; inches graduations</li><li>Developed for seismographic measuring. Attach any weight to the snap ring and lower to measure depth</li><li>The depth gauge is tough， flexible and lightweight with graduations printed on both sides.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51GVY337J7L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/510E4alVqgL.jpg" noproxy>