Interphasic compensator
An interphasic compensator was a Starfleet engineering tool used for realigning warp coils.

In 2371, Miles O'Brien had left the 's engine room looking for an interphasic compensator when the Changeling that had infiltrated the ship snuck up on Jadzia Dax and knocked her unconscious.

In 2372, when the Defiants warp core experienced a power surge, Benjamin Sisko utilized this tool to prevent a reactor breach by shunting the excess power through the navigational deflector. ()

See also 
 Interphase

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Engineering tools