NASA NTRS · 19870000486
Lead Scales for X-Radiographs
Abstract
Indentations made by typing on lead tape. Lead scales for inclusion in x-radiographs as length and position references created by repeatedly imprinting character like upper-case I, L, or V, or lower-case L into lead tape with typewriter. Character pitch of typewriter serves as length reference for scale. Thinning of tape caused by impacts of type shows up dark in radiograph.
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Burley, Richard K., Adams, James F.. 1987-10-01. Lead Scales for X-Radiographs. https://ntrs.nasa.gov/citations/19870000486
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