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Vibroseis truck used to map the subsurface of the Earth.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...k_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...seis_truck.jpg
Previously:
https://www.homemadetools.net/forum/...634#post170504
https://www.homemadetools.net/forum/...745#post155909
https://www.homemadetools.net/forum/...071#post141081
https://www.homemadetools.net/forum/...173#post138380
https://www.homemadetools.net/forum/...7862#post86386
It probably needs those lug nut sensors. But they are on the wrong way round.
didn't know there was a "right way" for wheel nut indicators - As long as they let you know if a nut is loose, I thought they could point any direction. I have seen them point to the centre, or facing each other in adjacent pairs.
Had one of those do our road 15 or so years ago. First they strung out miles of cable, with sensors stuck into the ground. Then drive the truck along the road, stopping like every 50 feet to lower the pads and shake things up a bit. they did drill a well a mile or so down the road a year os so after then. did not seem to find anything...
Common survey method for oil companies, we have many small site spread drilled well's in Hampshire and Dorset as a result of such surveys, some now well over 30 years old are still producing useful amounts without fracking.