### DRILL ROD CLAMPING SYSTEM AND METHODS OF

2019-10-20 · • Measure the diameter of the drill rod bit. Doing the Math Now do the following math: Depth = (1.5 times Drill Rod Diameter) minus (Thickness with rod minus Form thickness) For the example illustrated above: Depth = (1.5 x .139) – (.836 - .747) This reduces to Depth = (.2085 - .089) or Depth = .1195 FIGURE 3. Measure the diameter of the rod.....

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