For example: Agilent E4440A or Anritsu 68369
Keithley Instruments Multimeter
Keithley Instruments 175-AV
4.5 Digit Multimeter with datalogging
Manufacturer: Keithley Instruments
Keithley Instruments 2100/120
USB DIGITAL MULTIMETER-DMM, 6.1/2-DIGIT, 120V
Manufacturer: Keithley Instruments
Keithley Instruments 2110-120
5.5-digit USB Digital Multimeter (120V)
Manufacturer: Keithley Instruments
Keithley Instruments 2110-120-GPIB
MULTIMETER, DIGITAL, AUTO/MANUAL, 5-1/2 DIGIT
Manufacturer: Keithley Instruments
Keithley Instruments 2790-A
DMM/Precision Data Acquisition System, 1 High Voltage Card and 1MOhms
Manufacturer: Keithley Instruments
Keithley Instruments 2790-H
DMM/Precision Data Acquisition System, 1 High Voltage Card
Manufacturer: Keithley Instruments
Keithley Instruments 2790-HH
DMM/Precision Data Acquisition System, 2 High Voltage Card
Manufacturer: Keithley Instruments
Keithley Instruments 2790-HL
DMM/Precision Data Acquisition System, 1 High Voltage Card and 1 Low Voltage Car
Manufacturer: Keithley Instruments
Keithley Instruments 2790-L
DMM/Precision Data Acquisition System, 1 Low Voltage Car
Manufacturer: Keithley Instruments