Scientific tool that's rewritten comic prose (10)
I believe the answer is:
microscope
'scientific tool' is the definition.
(tool which a scientist might use)
'rewritten comic prose' is the wordplay.
'rewritten' is an anagram indicator.
'comic'+'prose'='comicprose'
'comicprose' is an anagram of 'MICROSCOPE'.
'that's' is the link.
(Other definitions for microscope that I've seen before include "Tiny organisms viewer" , "Optical instrument" , "Magnifying instrument" , "Magnifying device" , "Device for seeing very small objects" .)