Self-correcting mechanical device (5)

I believe the answer is:

servo

(Other definitions for servo that I've seen before include "Amplifying motor" , "Power mechanism" , "Mechanism amplifying forces" , "Control motor" , "Powered control mechanism" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.