Rotating bookmark
Rotating bookmarks were a kind of bookmark used in medieval Europe. They were attached to a string, along which a marker could be slid up and down to mark a precise level on the page.
Rotating bookmarks were a kind of bookmark used in medieval Europe. They were attached to a string, along which a marker could be slid up and down to mark a precise level on the page.
Rotating bookmarks were a kind of bookmark used in medieval Europe. They were attached to a string, along which a marker could be slid up and down to mark a precise level on the page.
Source: Wikipedia "Rotating bookmark" · CC BY-SA 4.0
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