Defcribcinrc(fla linea a b faper centro’ e 'dr CDmfcrentiam femicirculi eam<^ in nonaginta ae/ quales diftribue partes idextra propepundum b incipiendo. Quo fado numera a pundo balii tudinem polarem tux regionis , ad exitum cius facnotam d . Deinde a pundo d duclineamre/ diam ad pundum a:…
Horology · Sundials
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Orontij Finei Delphinatis ... [De mundi sphaera, sive Cosmographia] primáve astronomiae parte, lib. V: in audita methodo ab authore renouati, proprijsque tum commentarijs [&] figuris, tum demonstrationibus [&] tabulis recens illustrati. : Eiusdem Orontii, rectarum in circuli quadrante subtensarum (quos sinus vocant) demonstratio, supputatióq[ue]; facillima, nunc primùm edita: vnà cum eoru[n]de[m] sinuu[m] tabula, fideli admodu[m] calculo restitua. : Eiusdem Orontii, organum vniuersale, ex supradicta sinuu[m] ratione contextu[m], quo tu[m] geometrici, tu[m] omnes astronomici canones, ex quatuor sinuu[m] proportione pendentes, mira facilitate practicantur (1542)](https://img.insideoutlibrary.com/img/200/ia-orontijfineidelp00fine-172-0.webp)
![An illustration from Opus sphericum magistri Ioa[n]nis de Sacro busco natione angli figuris verissime exculptis et i[n]terp[re]tatione familiari ad co[m]moditatem desiderantiu[m] iucundissima artis astronomice callere principia pulcherrime et iterata recognitione illustratum (1505)](https://img.insideoutlibrary.com/img/200/ia-opussphericummag00sacr-64-0.webp)
