Time-keeper came across moron moving race's finish (9)

I believe the answer is:

metronome

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'time-keeper' is the definition.
I can't judge whether this defines the answer.

'came across moron moving race's finish' is the wordplay.
'came across' becomes 'met' (to come across is to meet or encounter).
'moving' indicates an anagram (letters are moved around).
'finish' indicates one should take the final letters.
The final letter of 'race' is 'e'.
'moron' anagrammed gives 'ronom'.
'met'+'ronom'+'e'='METRONOME'

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(Other definitions for metronome that I've seen before include "Musician's timekeeper" , "Musician's time device" , "Device for keeping time" , "Pendulum to indicate tempo of music" , "Ticker setting tempo of music" .)

I've seen this clue in The Independent.

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