In reply to Alan Williams.
My response to Ed Ditus's question, "how might one recover marks
stamped into steel armour... made illegible through over zealous
cleaning..", was based on my interpretation of the term "illegible" (I
assumed that some detail has survived. Why else would Ed make the
enquiry?).
I was therefore merely suggesting that some additional details (not
visible to naked eye, on the armour itself, nor on conventional
radiographs) maybe revealed by digitised radiographs scanned at high
resolution followed by image processing. As this technique is
relatively new, and little material has been published on the subject
(you would require assess to specialist hardware and software, DICOM
etc.), I feel that it is too early to dismiss radiography as a
technique per say. Alan has stated that, "the outer surface is rendered
completely smooth" by over-zealous polishing. However, one would have
to polish to a very extreme degree to obtain a completely smooth
surface, thus removing all traces of a punch mark and achieving "no
difference in the thickness where the mark is [or in this case
was]".
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Diane Charlton
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