NASA NTRS · 19750000179
Three-dimensional models aid visualization of engineering drawings
Abstract
Inexpensive cut-and-paste method allows construction of complex three-dimensional models in less than an hour. Models are constructed from film or paper copies made on office copier.
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Mcdougal, A. R., Aardahl, C. E.. 1975-08-01. Three-dimensional models aid visualization of engineering drawings. https://ntrs.nasa.gov/citations/19750000179
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