The Apocalypto Project's Test Scans of a Bundle of Locked Model Letters

Courtesy of The Apocalpto Project. A video showing the layers of a high contrast TDI CT (Time Delay Integration, computed tomography) test scan of a bundle of 20 locked letter models. Using historic letterlocking techniques, iron gall ink, quill, and sealing wax , the #SignedSealedUndelivered team made up the batch of new letters for testing.