How to measure gravitational frame-dragging on Earth with a superfluid interferometer

First derived by Lense and Thirring in 1918, frame-dragging is a genuinely general relativistic effect. Reported measurements of frame-dragging use satellites in Earth orbit. These tests rely on the accumulation of frame-dragging precession over many orbital periods and comparison with 'fixed stars' or Earth gravity models. We propose a 'table-top' experiment to locally measure the frame-dragging effect on Earth, using a Superfluid Helium Quantum Interference Device (SHeQUID), a superfluid analog of a conventional Superconducting Quantum Interference Device (SQUID). We derive the frame-dragging effect in a SHeQUID and present a concrete proposal for its experimental realization.