Comparisons of methods of surveying
A 1911 engineering thesis on comparisons of methods of surveying, written by George Wellington Pickels at the University of Illinois for examiners and practising surveyors. The plates are plain line diagrams of triangulation nets and traverse polygons, with solid boundary lines, dashed sight lines, lettered and numbered stations, and hand-lettered distances in feet, useful as geometric line art, network motifs, and hand-drawn measurement labels.
