![Phase coil resonator](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/3/38/Phase_coil_resonator.jpg/revision/latest/scale-to-width-down/180?cb=20050829055542&path-prefix=en)
A phase coil resonator
A phase coil resonator was a type of engineering tool.
In 2370, Lieutenant B'Elanna Torres used one while trying to construct a prototype Automated Personnel Unit. (VOY: "Prototype")
The prop was also seen in the movie Men in Black (curiously as a universal translator) but was first seen on Voyager. It was later re-used as a Srivani medical device in "Scientific Method" and a Hirogen engineering tool in "Flesh and Blood".