Special Features:

Unlighted black background; accommodates four t-1 3/4 midget flanged base lamps; illuminates amber and green; legend reads: tacan; tacan; supplied w/ground sensing circuit; major components: pushbutton 1, lampholder 1, actuator shaft 1, pushbutton retainer 1, legend plate 1, color filter 2

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.