Original, 18th century italian manuscript on how to build a vertical clock with sound: “Come si Dissegni in practica un Orologio Verticale Italiano a suonodella Campana secondo le regole del Scanavacca” [Translates: “How to Draw an Italian Vertical Clock with the sound of the Bell in practice according to the rules of [Bartologmeo] Scanavacca”].
Italy, c.1750. A4. 22 pages with text, diagrams or drawings (partly in colour). Original Softcover Folder with original manuscript papers and drawings inside. Majority of the pages with damages and some with loss of text to outer margins. Extremely rare and interesting manuscript, also dealing with “Orologi a Sole Guili”.