NASA NTRS · 19680000183
Detection and location of metallic objects imbedded in nonmetallic structures
Abstract
Small battery operated eddy current proximity measuring device detects and locates metal objects the size of a dime at distances up to one foot within nonmetallic structures. This device weighs approximately two pounds, occupies approximately 60 cubic inches, and is battery powered.
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Brown, R. L., Neuschaefer, R. W.. 1968-06-01. Detection and location of metallic objects imbedded in nonmetallic structures. https://ntrs.nasa.gov/citations/19680000183
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