Crossword Genius

Unit at large performing survey (11)

Ross

I believe the answer is:

triangulate

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

'unit at large performing' is the wordplay.
'performing' is an anagram indicator.
'unit'+'at'+'large'='unitatlarge'
'unitatlarge' anagrammed gives 'TRIANGULATE'.

(Other definitions for triangulate that I've seen before include "Use a method of surveying (an area)" , "Measure in sections" , "to survey position" .)

I've seen this clue in The Guardian.
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