Crossword Genius

Prepared to be persuaded not to measure (5,4)

Ross

I believe the answer is:

ready made

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

'prepared' is the definition.
(thesaurus)

'persuaded not to measure' is the wordplay.
I cannot quite understand how this works, but
'measure' could be 'ma' (mA is a kind of measure) and 'ma' is found in the answer.
This explanation may well be incorrect...

'to be' acts as a link.

Can you help me to learn more?

(Other definitions for ready made that I've seen before include "off-the-peg garment" , "Duchamp piece" , "beautifully suited" , "Needing no preparation" , "may be ideally suited" .)

I've seen this clue in the Evening Standard.
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