[William St. Guthlac]

My understanding is that the later measurement was taken on a later, patched in fabric which are a repair of missing material lost, I think, to fire damage. It is not the high quality, herringbone weave of the original intact shroud. The Fox article was behind a paywall, but there is another summary here.
https://streetevangelization.com/the-shroud-of-turin/

When I first became a Catholic I was amazed by this artifact. When I attempted my first staions of the cross... There it all was. Recorded in the shroud.

I found the best stuff poking around on YouTube.