[citation needed] It uses a cable and a screw mechanism to provide the operator precise control over an engine's operation.
[citation needed] The concept is similar in use to vernier calipers which have a primary scale for gross measurements, and a secondary scale for fine measurements.
Vernier throttles are commonly used in aircraft.
[citation needed] A similar mechanism is also used in reciprocating (gasoline) aircraft engines to set the mixture to an appropriate value for a given altitude.
[citation needed] This aircraft-related article is a stub.