Crossword Genius

Useful thing when fixed (5)


I believe the answer is:


'useful thing' is the definition.
(I've seen this before)

'when fixed' is the wordplay.
'when' becomes 'as'.
'fixed' becomes 'set' ('set' can be a synonym of 'fixed').

(Other definitions for asset that I've seen before include "Advantage, strength" , "one liable to be stripped?" , "virtue" , "valuable sort" , "Something valuable to have" .)

I've seen this clue in The Telegraph.
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