HP 3466A is a 4 /2 digit auto ranging multimeter offering six functions ACV, DCV, ACI, DCI, Ohms, and Diode Test.  ACV and ACI measurements are true rms with selectable ac or dc coupling.  Available with rechargeable batteries or ac power only, it offers 1 µvolt and 1 Ohms sensitivity with zero adjustment on the lowest ranges to compensate for external offsets.
 
Hewlett Packard 3466A