Such tolerance may be a matter of degree (8)
I believe the answer is:
latitude
'such tolerance' is the definition.
'latitude' can be an answer for 'tolerance' (thesaurus). I am not sure about the 'such' bit.
'a matter of degree' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'matter' could be 'ti' (Ti is an example) and 'ti' is located in the answer.
'degree' could be 'd' (abbreviation for the degree in measuring angles) and 'd' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'may be' acts as a link.
Can you help me to learn more?
(Other definitions for latitude that I've seen before include "Room to manoeuvre or distance from equator" , "seen the world over" , "Tolerated extent of freedom" , "a certain line?" , "London's is about fifty one point five degrees North" .)