Crude but fit for purpose (5-3-5)

I believe the answer is:

rough-and-ready

(Other definitions for rough-and-ready that I've seen before include "Serving well enough for the task" , "Hastily prepared, but adequate" , "Lacking refinement but serving a purpose" , "Unrefined" , "Crude but effective" .)

I've seen this clue in The Times.

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