Scraper for determining the position of pipelines with at least one scraper body and on the outer circumference of the latter are provided support elements for guiding in the pipeline, the scraper body containing a gyroscopic platform, as well as supply and processing means for measured results, characterized in that the scraper body is guidable by a combination of support elements under a defined, constant angle with respect to the pipe guidance axis, whereof a first part is radially rigid and a second part is radially resilient.
https://app.acclaimip.com/pdf/Nk4Q7pZHhEZsThCLc0eESgfbO1BGDloFsWLHFzc/US6108921
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