Criterion for judging small quantity and weight (10)
I believe the answer is:
touchstone
'criterion' is the definition.
(synonyms)
'quantity and weight' is the wordplay.
'quantity' becomes 'touch' (touch is a kind of quantity).
'and' means one lot of letters go next to another.
'weight' becomes 'stone' (stone is a unit of weight).
'touch'+'stone'='TOUCHSTONE'
'for judging small' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for touchstone that I've seen before include "Shakespearean character" , "Jasper" , "forest-dweller" , "Character in As You Like It" , "Standard" .)
