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equilibrator (ēkwil´ibrātur),

n an instrument or device used in achieving or maintaining a state of equilibrium.
References in periodicals archive ?
If the equilibrators aren't kept balanced during these temperature changes, it can gel really hard lo elevate or depress the cannon for firing.
LO 9-2350-264-12 (25 Sep 06) says to lube the commander's weapon station equilibrator spring.
An equilibrator of gear box that can't function deadlines the howitzer.
Improperly shimmed equilibrator adjusting screws on your M198 towed howitzer are bad news, crewmen.