Wiktionary
voltmeters
n. (plural of voltmeter English)
Usage examples of "voltmeters".
The tiny voltmeters at each porthole all register the voltage as 'normal' for their porthole.
So in theory a computer, by comparing the pattern of voltages registered by the voltmeters at all the portholes, could calculate the pattern of obstacles around the fish.
Behind the workman scurried assistants, dashing about carrying stethoscopes and voltmeters and giant wrenches over a great scaffolding.