Gilgamesh looked to the north, and pulled a Noble Phantasm from his “treasury” — a weirdly curved lens set in a golden ring that floated in the air. Despite having only a single lens, it displayed distant scenery like a telescope.
“I never imagined it would serve to repel the arrows of a mere archer.”
The image that appeared in the ring was that of a man, facing them and fearlessly readying his bow.
“An archer...?”

Fate/Strange Fake: Volume 2, Chapter 6 ("Day 1, Noon")