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Corrosion layers corrosion - failure in form of a separate layer

  • Position the welding gauge on the surface of the base metal at a minimum distance from the measurement point. 
  •  For greater stability of the welding gauge during measurement takings, use the pivots

˟the parameter measured during monitoring is highlighted in red

  •  Adjust the linear member 3 so that the taper gauge 5 is above the measurement point. 
  • Lower the top High-Lo arm 4 until the taper gauge 5 makes contact with the surface of the test object at the point of measurement. 
  • Take the value of the parameter h from the vertical scale C as illustrated by the Figure aside.