Duralumin, its properties and uses
Duralumin, its properties and uses is a 1924 technical report issued through NASA's Technical Reports Server, a record that gives no further authorship, place or audience detail. Its two pictures are plain line graphs on gridded paper: one plots a metal's property against temperature with a shaded band of variation, the other plots a rising curve against hours on a labelled horizontal axis. A designer might take their clean axis labelling, dotted data points and restrained grid as a model for technical charts.
