plug meter

plug meter

[′pləg ‚mēd·ər]
(engineering)
A variable-area flowmeter in which a tapered plug, located in an orifice and raised until the resulting opening is sufficient to handle the fluid flow, is used to measure the flow rate.
References in periodicals archive ?
He noted that 54 percent of the surveyed motorists said they would come downtown less often if they had to plug meters.
Taylor, who works at Hutch's Bicycle Store on Charnelton Street, said allowing customers to park free for two hours downtown instead of requiring them to plug meters or pay for lot or garage parking should help business.