A semi-graphical method for analyzing strains measured on three or four gage lines intersecting at 45 degrees
A 1939 NASA technical report presenting a semi-graphical method for analyzing strains measured on three or four gage lines intersecting at 45 degrees, aimed at engineers working on structural stress measurement. The one picture is a diagram of a sine-type curve with labeled axes, angle markings, and dimension lines, which a designer could take as a clean model for annotated technical plotting and measurement callouts.
