Fluke 931B RMS Differential Voltmeter

Description

Fluke 931B RMS Differential Voltmeter
I took two photos with the cover off. It looks clean inside.
To demonstrate basic functionality I used a signal generator to output a 10 kHz sine wave at 1 V RMS.
Then I connected this signal to the Fluke 931B.
Photo 5 shows a 1 V measurement on the TVM mode.
Photo 6 shows the 1 V measurement on a Keithley 2000 DMM.
Photo 7 shows the 1 V signal nulled on the 10 V scale
Photo 8 shows the 1 V signal nulled on the 1000 mV scale
Photo 9 shows the generator adjusted for a 2 V output.
Photo 10 shows the Fluke 931B nulled on the 10 V scale.
I'm an electrical engineer and getting ready to retire so I'm selling the electronic test equipment and standards I've acquired over
the years.
Auction is for the Fluke 931B RMS voltmeter only. The Keithley 2000 is not included.