Levinus Hulsius
Levinus Hulsius (1550 – 1606) was a maker and dealer of fine scientific instruments; publisher and printer; linguist and lexicographer; wrote extensively on the construction of geometrical instruments. Although he was born in Flanders he lived and worked in the Netherlands and Germany.
- Tractatus instrumentorum mechanicorum (in Latin). Vol. 1. Frankfurt: Wolfgang Richter. 1605.
- Tractatus instrumentorum mechanicorum (in Latin). Vol. 2. Frankfurt: Wolfgang Richter. 1605.
- Tractatus instrumentorum mechanicorum (in Latin). Vol. 3. Frankfurt: Wolfgang Richter. 1605.
- F.X. de Feller (1818). "HULSIUS (Levinus)". Dictionnaire historique, ou Histoire abrégée (in French). Vol. 4. Paris & Lyon. p. 675.
- Georg Wolfgang Karl Lochner (1881). "Hulsius, Levin". Allgemeine Deutsche Biographie (in German). Vol. 13. Leipzig: Duncker & Humblot. p. 335.
- Josef Benzing (1974). "Hulsius (van Hülsen), Levin". Neue Deutsche Biographie (in German). Vol. 10. Berlin: Duncker & Humblot. p. 30. (full text online).
- Mathematics from the birth of numbers, Jan Gullberg, W. W. Norton & Company; 1st ed edition (October 1997), 1093 pages ISBN 0-393-04002-X ISBN 978-0-393-04002-9
- Ralf Kern: "Wissenschaftliche Instrumente in Ihrer Zeit". Band 2: "Vom Compendium zum Einzelinstrument". Verlag der Buchhandlung Walther König 2010, ISBN 978-3-86560-866-6