Orienteering aid

I think it could be either:

Which length description are you looking for?:

compass

'orienteering aid' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for compass that I've seen before include "Range, extent" , "where all points considered?" , "Achieve" , "Range - direction finder" , "Direction finding instrument - range" .)

I've seen this clue in The New York Times.

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