It magnifies distant objects (9)
I believe the answer is:
telescope
'it magnifies distant objects' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for telescope that I've seen before include "Instrument to magnify the image of distant objects" , "optical equipment" , "Optical instrument for viewing at a distance" , "View distant objects through it" , "Compress like optical instrument that magnifies" .)