Controlling members specially adapted for actuation by keys, screwdrivers or like tools

Full Title

Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members (joysticks G05G9/04; steering wheels for motor vehicles B62D) > Controlling members specially adapted for actuation by auxiliary operating members or extensions; Operating members or extensions therefor (pedal extensions) > Controlling members specially adapted for actuation by keys, screwdrivers or like tools