On this page of the guide to the game Minecraft Caves & Cliffs you will find information about the spyglass. Here we describe how to make and use it .
Making a lightning rod
Made from 2 copper ingots and 1 amethyst crystal, from top to bottom (as in the screenshot above).
Copper ingots obtained after melting of copper ores.
The spyglass zooms in on any location in the field of view. When you use it, the player's field of view is reduced to 1/10 FOV.
Looking through the spyglass slows down the character's movements. If you do not put down the spyglass, then after a minute of viewing, the character will put it down.