Special Features:

Engraved legend reads s band, path/self, test; major components: housing 1, t-1-3/4 midget flange base lamps 4, amber lamp filters 4, horizontal split engraved lens 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.