Compass

Compasses are an item used to point to the world spawn.

Trading
A single compass can be bought from a librarian villager for 10 to 12 emeralds as part of their tier 2 trades.

Usage
The compass needle points towards the world spawn point. The compass will point to spawn when viewed in any way, including as a dropped item, in a player's hand, in an inventory or the crafting table, or in an item frame. The direction the needle points is relative to the player who is viewing it.

In the Nether or the End, the compass' needle will spin wildly and point in random directions.

Trading
A single compass can be sold to a cartographer villager for 1 emerald, as their tier 2 trade. A compass is also part of the cost of explorer maps: an ocean explorer map can be bought from a cartographer for 12–20 emeralds and a compass, and a woodland explorer map can be bought from a cartographer for 16-28 emeralds and a compass, as their tier 4 trades.

Trivia

 * A compass can be viewed under the item statistics page, as long as one has made a compass at some point in the past.
 * A compass points to the northwest corner of a block, not the middle.
 * Using to change the world spawn will change where the compass points to.