Here is a PDF version of the slides I showed: BardAstrolabes.pdf. The links in the document take you to the catalog entry for that astrolabe. Here are a couple other astrolabes you might find interesting:
- Paper astrolabe (printed paper glued onto wood).
- Template for engraving the back.
- Silver (probably fake) astrolabe.
You can search and browse the collection at the Museum of the History of Science here: https://www.mhs.ox.ac.uk/astrolabe/catalogue/index_html.html
Thanks again for letting me visit your seminar and talk about astrolabes. Let me know if you have any questions.