NASA NTRS · 19710008111
Contour surveying system Patent
Abstract
Describing device for surveying contour of surface using X-Y plotter and traveling transducer
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Batts, C. N., Gibson, F. W., Hess, R. W.. 1970-10-20. Contour surveying system Patent. https://ntrs.nasa.gov/citations/19710008111
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