Determining elevation and position of a spire. In:
Geometriae practicae novae et auctae tractatus I[-IV] ... By Daniel Schwenter,
1585-1636. Published posthumously in 1641.
Book 2, page 94. Call Number TA544 .S38 1641
Image ID: libr0029, Treasures of the NOAA Library Collection Photographer: Archival Photograph by Mr. Sean Linehan, NOS, NGS
