In a world of big books and small books, have both. You see a 1557 portrait of the scholar Gemma Frisius (by Jan van Stalburch) with a tiny notebook on the table, and with big bound books in the back. Alert for #earlymodern #backwardbooks
For more details on the #astrolabe enjoy this: https://astrolabium.be/mesurercieletterre/2023/10/03/portrait-de-gemma-frisius/?lang=fr