Special Features:

Accommodates t-1 midget flange base lamps; horizontally split screen; legend on upper half illuminates red and reads apu, lower half crosshatched with diagonal lines which illuminate red and legend which reads 9; sunlight readable; major components: lamp module 1, plunger 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.