I had an engineer come out to the house today to see about fixing the drainage problem as well as propping up where the foundation had settled.
He brought out one of the coolest tools I have seen in a long long time. A ZipLevel. It is a case with a hose reel and a box on the end of the hose. Inside the box is a pressure sensor that looks at the relative difference in air pressure between the box and the other end of the hose. Yes. That sensitive. You zero out the box and can then walk around and the box will display its relative height compared to the zero point. If you get the high precision version, it is accurate to 0.01 inches. Srandard is just 0.1" or 1/8th inch. High precision version sells for about $1,200 with all the accessories.
WIth this, he was able to walk around the house mapping out the high and low points.
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