Close inspection (8)
'close inspection' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for scrutiny that I've seen before include "Intense study" , "From close inspection" , "Close, careful examination" , "Careful inspection" , "A careful look or examination" .)
(Other definitions for perusal that I've seen before include "Thorough read-through" , "Process of examination" , "worth a close look" , "Reading, examination" , "Study or scrutiny" .)