[Gnomonics] Saggio di Gnomonica
Per l'elevazione di settente da gradi (...). 1815. Three handwritten booklets, each approx. 30 p., on gnomonics (the study of sundials) and two loose letterpress sundial diagrams. Written in Italian w. num. hand-drawn (some handcol.) diagrams, graphs and figures. Together in a marbled paper folder, 20 x 16 cm.
Unique and interesting manuscript.