I have a kitchen faucet whose surface consists of a base metal ring, a body
sleeve, and a metal handle. At first glance it appears all metal parts are
in contact with each other. Measurements reveal the base metal ring is
grounded (measured 0 volts AC and several ohms to a grounded receptacle's
ground pin), but the sleeve and handle are not grounded.

Is there any code violation here? This faucet is 20 years old. I don't mind
replacing the faucet if it helps.