vernier /ˈvɚniːɹ/ noun3 •A secondary scale with finer graduations than the primary scale of a measuring device; the vernier measures between graduations of the larger scale. •A secondary control input with finer control than the primary, or coarse, input; for example the vernier frequency tuning knob on a radio. •A secondary system of force application for the attitude control of a spacecraft; for example a vernier thruster. formsverniers
