The Hourglass of Nicodemus is a strong magical device. With it, it is possible to walk through time traps without any harm. Also, it is possible with it to talk with the Time Lord over any kind of distance without problem.

Because of his madness caused by the Tetrahedron Generator, Nicodemus was unable to hold the enchantment on the Hourglass and in the end sold it to Beverlea in Paws. The Avatar acquired it in Ultima VII, and after destroying the Tetrahedron Generator, asked Nicodemus to re-enchant the Hourglass. With the enchanted Hourglass it was easy to breach the trap in front of the Sphere Generator and talk to the Time Lord after the Moongates had collapsed.