Lincoln TIG 275 voltmeter question

[ASKANDY]

Our unit comes standard with the volt meter and ampmeter too but like you said, most will not use the voltmeter.

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[Scott V]

Been using a fairly new Lincoln Precision TIG 275. One of the features is a voltmeter activated by a momentary switch. Not sure if the Miller machines have the same thing. What exactly is the purpose of this? I obviously can't reach over and hit the sw to get a voltage reading while welding. Is this a bell/whistle that serves no useful purpose?

My Thermal-arc has the same thing. I know at the local miltary contrator the inspectors will check the voltage while welding to make sure the weldor is keeping the correct arc length.

[glockdoc]

Been using a fairly new Lincoln Precision TIG 275. One of the features is a voltmeter activated by a momentary switch. Not sure if the Miller machines have the same thing. What exactly is the purpose of this? I obviously can't reach over and hit the sw to get a voltage reading while welding. Is this a bell/whistle that serves no useful purpose?