Measured depth on centre of area and rang (9)
I believe the answer is:
resounded
'rang' is the definition.
('resound' can be a synonym of 'ring')
'measured depth on centre of area' is the wordplay.
I cannot quite understand how this works, but
'measured' could be 'sounded' (sounding is a kind of measuring) and 'sounded' is present in the answer.
'on' could be 're' (regarding) and 're' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for resounded that I've seen before include "were widely known" , "Echoed, reverberated" .)