Can someone tell me what the schematic symbol (circles above the ground symbol) means cocnerning the filament winding of the transformer that goes to chassis?

:Can someone tell me what the schematic symbol (circles above the ground symbol) means cocnerning the filament winding of the transformer that goes to chassis?

Brian,
They should be pilot lights.
Carl T

Thank you, that didn't occur to me and it should have.

::Can someone tell me what the schematic symbol (circles above the ground symbol) means cocnerning the filament winding of the transformer that goes to chassis?
:
:Brian,
:They should be pilot lights.
:Carl T