Primitiae gnomonicae catoptricae, hoc est, Horologiographiae nauae specularis ... (1635)
Kircher, Athanasius, 1602-1680 · Auenione : Ex typographia I. Piot ... · leaf 236
tium fimorum lineis , plano meridiano iufcnbere . R Elido inftrumento in ficu priori, horas ab ortu. Se occafu inferibes : fi promoto zodiaco radiofo ad horas arcuum diurnorum in limbo fem i circuli QA S. notatas, per radios tropicorum , Se aqua- toris filo dudo punda. in muro oppofito irnpref-…
Sundials
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
