A lever not controlling any Signalling FunctionA Signal, set of Points or other part of the train control system. More but remaining connected to
the Mechanical LockingA method of interlocking where the components are movable metal pieces which physically lock and prevent the movement of one lever against another. More. It is not considered to be a Spare LeverIn a Lever Frame, a lever which is not used for the operation of any signalling equipment. See also Lever (Worked To Maintain Locking). More.