Illustrating a geometric/surveying concept. In:
Geometriae practicae novae et auctae tractatus I[-IV] ... By Daniel Schwenter,
1585-1636. Published posthumously in 1641.
Book 1, page 151. Call Number TA544 .S38 1641
Image ID: libr0028, Treasures of the NOAA Library Collection
Photographer: Archival Photograph by Mr. Sean Linehan, NOS, NGS
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