Henrion, D. (Denis), ca. 1580-ca. 1632 · A Roven : Chez Denis dv Chesne ... · leaf 9
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Compasses (Mathematical instruments) · Measuring instruments · Geometry -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Gnomonice Andreae Schoneri Noribergensis, hoc est, De descriptionibvs horologiorvm sciotericorvm omnis generis, proiectionibus circulorum sphaericorum ad superficies, cum planas, tum conuexas concauasq[ue], sphaericas, cylindricas, ac conicas, item delineationibus quadrantum, annulorum, &c. libri tres (1562)](https://img.insideoutlibrary.com/img/200/ia-gri_33125009484227-133-0.webp)
