Io. Baptistae Benedicti patritij veneti philosophi De gnomonvm vmbrarvmq. solarivm vsv liber : nunc primùm publicae utilitati, studiosorumq̀. commoditati in lucem aeditus (1574)
Benedetti, Giovanni Battista, 1530-1590 · Avgvstae Tavrinorvm : Apud haeredes Nicolai Beuilaquae · leaf 198
De modo (ex di/creto )inu€mendi angult^miixisort^^^ontalis cum Ucie tetral)edri . O/. LXXXIL … pyramidis 1 5 3 5 3 3 • cum vna tertia , & produdum ipfius . a. c. in c. b. erit, 8 S8 8777778.
Sundials -- Early works to 1800
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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