Glue ear's picked up and measured (5)
I believe the answer is:
paced
'measured' is the definition.
(pacing is a kind of measuring)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for paced that I've seen before include "Steadily walked" , "set the tempo" , "Made anxious moves" , "assist an athlete" , "Walked at a steady speed" .)