Aristotle redesigned machine for the better (9)

I believe the answer is:

totaliser

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'machine for the better' is the definition.
I can't tell whether this defines the answer.

'aristotle redesigned' is the wordplay.
'redesigned' indicates anagramming the letters.
'aristotle' with letters rearranged gives 'TOTALISER'.

Can you help me to learn more?

(Other definitions for totaliser that I've seen before include "Risky system" , "system for the better" , "Summer" , "Betting system" , "you can bet on it!" .)

I've seen this clue in The Independent.

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