NASA NTRS · 19670000431
Camera lens adapter magnifies image
Abstract
Polaroid Land camera with an illuminated 7-power magnifier adapted to the lens, photographs weld flaws. The flaws are located by inspection with a 10-power magnifying glass and then photographed with this device, thus providing immediate pictorial data for use in remedial procedures.
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Moffitt, F. L.. 1967-11-01. Camera lens adapter magnifies image. https://ntrs.nasa.gov/citations/19670000431
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