This tool fixed parts of the ear (8)

I believe the answer is:

otoliths

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'parts of the ear' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'this tool fixed' is the wordplay.
'fixed' indicates an anagram.
'this'+'tool'='thistool'
'thistool' is an anagram of 'OTOLITHS'.

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I've seen this clue in The Times.

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