Rvdimenta mathematica : haec in duos digeruntur libros, quorum prior geometriae tradit principia seu prima elementa, unà cum rerum & uariarum figurarũ dimensionibus : posterior uerò omnigenum horologiorum docet delineationes (1551)
Münster, Sebastian, 1489-1552 · Basileae : In Officina Henrichi Petri · leaf 59
tilTimum in extremitate fpatrj menfu randi conftituat.Etproptereano parum iuuaret inftitutione iftam,li quis in menfurationelatitudinis foliati aut fluurj prpterfluentis erigeret fealam certae menfurae,atcp ex eius fummitate per fealam altimetram aduerteret latus foffa^ ti aut fluurj oppofitum.… … Erigeinfluurj citeriori littorefcala alicp certae quatitatis, ut quae habeat i o.aut 12. pedes in logitudine,eitpin fummitate adhibe fealam altimetram,per cuius punda umbrae uerfac refpiciaslittus oppofitum 3C faciasproportionem cum fcala aut baculo loco fcalae eredorputafi regula ceciderit mpundum…
Geometry -- Early works to 1800 · Horology -- Early works to 1800 · Sundials -- Early works to 1800
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Inventum P. Apiani. : Das ist, Beschreibung eines geometrische[n] Instruments, durch welches one alle Rechnung gar behend vnd leichtlich, allerlen höche, weitte, tieffe vnd braite, auch allerley Fläschen oder ebnen Innhalt, abgemessen, vnd andere mehe nutzliche Sachen erkundiget werden. (1616)](https://img.insideoutlibrary.com/img/200/ia-inventumpapianid00galg-38-0.webp)
