Measure girl, OK after reviewing contrary novel (10)

I believe the answer is:

kilogramme

I'm a little stuck... Click here to teach me more about this clue!

'measure' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'girl ok after reviewing contrary novel' is the wordplay.
'after' says to put letters next to each other.
'reviewing' is an anagram indicator (To re view).
'contrary' says the letters should be written backwards.
'novel' becomes 'emma' (I've seen this before).
'emma' back-to-front is 'amme'.
'girl'+'ok'='girlok'
'girlok' is an anagram of 'kilogr'.
'kilogr'+'amme'='KILOGRAMME'

Can you help me to learn more?

(Other definitions for kilogramme that I've seen before include "Metric weight" , "SI unit" .)

I've seen this clue in The Guardian.

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