This is more like the compass for finding your way out of a geometry book. A mathematical compass (like this one) is used to draw perfect circles. For Donne, it was the perfect metaphor for the long-distance relationship he imagined with his wife. Line 26: The compass is introduced emphasizing two crucial features.
Direct object.
The direct object receives the action of a verb in a sentence.
The indirect object represents to whom or for whom something is said.
Ex: Sandra gave the book to Tom.
Sandra is receiving the action: she gives the book
Tom is the one getting the object
Neither, a metaphor would be like "I'm so hungry that I could probably eat an elephant," while a simile would have 'like' or 'as' to describe something.
Answer:
Number one answer is Rhyme while Number two answer is simile