Sly gasps emitted at use of small telescope (8)
I believe the answer is:
spyglass
'small telescope' is the definition.
(I've seen this before)
'sly gasps emitted at use' is the wordplay.
'sly gasps' anagrams to 'SPYGLASS'.
But, I am not clear how the anagram is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for spyglass that I've seen before include "little scope" , "Viewing aid" , "See-through article" , "he can see through it!" , "Small refracting telescope" .)