HP-Agilent/Keysight 3468B

It is a fully programmable HP-IL (serial interface)Digital Multimeter a two-wire serial interface, and the HP-41C/CV handheld calculators or the more powerful HP Series 80 computers. It offers 3.5 digit to 5.5 digit resolution flexibility permitting speed for readings/second tradeoffs to be made. Electronic calibration through the front panel, true rms ac measurements, and an LCD display. Measures DC & AC Volts, DC & AC current, and 2-wire & 4-wire Ohms.