Handles more delicate gauge in school (7)
I believe the answer is:
fingers
'handles' is the definition.
The answer and definition can be both to do with communicating as well as being verbs in their -s form.
Perhaps you can see a link between them that I don't see?
'more delicate gauge in school' is the wordplay.
'more delicate' becomes 'finer' ('fine' can be similar in meaning to 'delicate').
'gauge' becomes 'g' (this could be a standard abbreviation which I don't know about).
'in' indicates putting letters inside.
'school' becomes 'S'.
'finer' enclosing 'g' is 'finger'.
'finger'+'s'='FINGERS'
Can you help me to learn more?
(Another definition for fingers that I've seen is " Digits".)