Fig. 3: The wooden test object.

a Wooden object (h 5 cm x w 6 cm x d 3 cm). Zoomed radiographs of the wooden test object at b the British Museum, c the J. Paul Getty Museum, d the Rijksmuseum, and e the FleX-ray laboratory.
a Wooden object (h 5 cm x w 6 cm x d 3 cm). Zoomed radiographs of the wooden test object at b the British Museum, c the J. Paul Getty Museum, d the Rijksmuseum, and e the FleX-ray laboratory.