And Sheila had huge feet so probably had huge hands 
That reminds me, Tyler if you're around, how wide is the bible? I think I found one on eBay and the width was given as 5 1/4 inches, when I scaled the photo up to that size the print was a pretty good match for mine.
Hiya Bridget.Bible is 22cm long,well 21 and a half to be totally exact. It is 13cm wide and3cm thick.
Regarding Hammersley,don't forget that he was investigated by COLP over something that he "didnt discover". Maybe he "didnt discover" this something as he wasnt there at that time but his name has been attributed to it? Whoever bagged Sheilas hands had never done it before and I am sure I read somewhere that it was not done correctly. How long had Hammersley been a detective? If he had been for many years,its likely that he had done it before?