Study camping equipment from the inside (8)
I believe the answer is:
contents
'the inside' is the definition.
(thesaurus)
'study camping equipment' is the wordplay.
'study' becomes 'con' (con can mean to study).
'camping equipment' becomes 'tents' (I've seen this in another clue).
'con'+'tents'='CONTENTS'
'from' is the link.
(Other definitions for contents that I've seen before include "All that's contained" , "Satisfies the list of chapters" , "List of what's included" , "List of everything included" , "list of ingredients" .)