Which two things did Daedalus' nephew create that showed his inventiveness was greater than that's of his uncle?

Two things that Daedalus' nephew created or invented which were very important were the saw from the spine of this fish. He also invented the compass.

Explanation:

Daedalus was a great Greek craftsman and inventor. His by far greatest works are the labyrinth, a humongous maze, which was made as a holding place for the Minotaur and the wings made of feathers, which he and his son Icarus had used to escape with from Crete.

But his nephew created even better things than the famous inventor himself. His nephew whose name was Perdix created or invented the saw from the spine of a fish, and he is said to have invented the compasses as well.