Deli counter device (5)
I believe the answer is:
scale
'deli counter device' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for scale that I've seen before include "Relative magnitude" , "Alec's (anag) -- graduation" , "Series of notes in an octave" , "Climb, or series of notes in music" , "Ratio of, say, map to reality" .)