President's touring Scottish island, a bit of a sight (10)
I believe the answer is:
crosshairs
'president's touring scottish' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'island a bit of a sight' is the wordplay.
I cannot really understand how this works, but
'island' could be 'i' (geographical abbreviation) and 'i' is present in the answer.
'a' is present in the answer.
'bit' could be 'o' (resembles 0, a binary digit or bit) and 'o' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for crosshairs that I've seen is " You've got them in your sights".)