For example: Agilent E4440A or Anritsu 68369
Rigol Multimeter
Rigol DM3052
Digital Multimeter 5.75 Digit (400,000-count), with LAN/USB and GP-IB
Manufacturer: Rigol
Rigol DM3054
Digital Multimeter 5.75 Digit (400,000-count) w/ USB, LAN, GP-IB, & Multiplexer
Manufacturer: Rigol
Rigol DM3062
Digital Multimeter 6.5 Digit (2,400,000-count) w/ USB, LAN, and GP-IB
Manufacturer: Rigol
Rigol DM3063
Digital Multimeter 6.5 Digit (2,400,000-count) w/ USB & Multiplexer
Manufacturer: Rigol