Special Features:

Lens engraved margin test; maj comp: yellow filters 4, lamps 4, rfi screen 1, panel screen 1, lens 1, housing 1

Properties:

Two or more different types of items having a common mounting or mounted on each other which together forms a portion of a switch but which in itself is not a complete functioning item and cannot be assigned a more definite item name. See also switch section, rotary and contact assembly, electrical.