Chap who measured wind of a brute letting rip (8)

I believe the answer is:

beaufort

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'chap' is the definition.

'measured wind of a brute letting rip' is the wordplay.
'of a brute' anagrams to 'BEAUFORT'.
However, I'm unsure how the anagram is indicated.

'who' acts as a link.

Can you help me to learn more?

(Other definitions for beaufort that I've seen before include "Be far out to find scale of wind velocity" , "Scale for wind speeds" , "Scale of wind speed" , "Scale for the force of wind" , "Windscale in bits" .)

I've seen this clue in The Independent.

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