Voltometer 

Used for measuring volts of electricity

Do you have a voltometer

Voltometer by SK Donkey April 29, 2019

vomitometer 

A scale you would use to measure the "pukeability" of something. Is incredible diverse, can be used to describe the ugliness of girls, the disgustingness of food, or the unpleasantness of a stomach upset.

That chick had to be close to ten on the vomitometer...

vomitometer by Pete August 29, 2005

voltmeter 

A tool used to measure volts in an electric current.

I used a voltmeter in science and got an A.

voltmeter by The Man October 16, 2003