Porter, Dot2023-05-232023-03-072023-03-072023-03-07https://repository.upenn.edu/handle/20.500.14332/46849youtubeAstrolabes--Early works to 1800Astronomical instruments--Early works to 1800Compasses (Mathematical instruments)--Early works to 1800Manuscripts ArabicManuscripts 13th centuryManuscripts MedievalCodices (bound manuscripts)DiagramsTreatisesStamps (Provenance)Annotations (Provenance)Arabic StudiesAstrophysics and AstronomyHistory of Science, Technology, and MedicineMedia