होकायंत्र

A magnetic compass, as used for navigation. Generally depicted in a silver or gold case with a compass rose and a red-tipped needle. Commonly used for various content concerning traveling and exploring as well as metaphorical compasses (e.g., moral compass).

Facebook’s markings include the initials of the four cardinal directions, north, south, east, and west. Not to be confused with various clock or timepiece emojis.