The phrase "employ a device" is correct and usable in written English.
You can use it when referring to the use of a tool or instrument of some kind. For example, "The company employed a new device to streamline their workflow processes."
The paintings also employ a device that Hockney would quickly abandon: words, which appear like coded messages.
That cushion, he said, could include the use of masking agents, or time to flush the body of drugs and employ a device to produce someone else's drug-free urine.
But it would have been nice to see Saldin heed this advice herself rather than employ a device that continually breaks Lida's strong narration and the tension of what is otherwise a gripping story.
Future studies will also employ a device located at the heart of Envihab: a human centrifuge.
They all employ a device that monitors the state of each network device and ensures that it's running with some kind of protective measures, including a personal firewall.
Those clinical data provide a motivation to search for pre-monitoring alterations on EEG recordings from the brain and to employ a device that can act without human intervention to forewarn the patient [17].
The treatment employs a device used by track runners but infrequently by marathon runners.
In The Taming of the Shrew (c. 1590 94), Shakespeare employs a device of multiple plotting that is to become a standard feature of his romantic comedies.
And that makes it rather difficult to measure.The favoured way of measuring h in terms of mass employs a device called a watt balance.
As a result, Mr. Reid employed a device known in Senate parlance as filling the tree to prevent amendments — a tactic that outraged Republicans and often brought the Senate to a standstill.
He employs a device beloved by writers and artists — and, it should be said, magazine editors — dating at least as far back as Katsushika Hokusai's 1820s series of woodblock prints "36 Views of Mount Fuji".
