This did not affect the operation of the unit.
Vintage Triang P42 Circuit Controler with High/Low Resistance Untested Ref KK40
Triang P42 Circuit Control Unit OO Gauge with Box & Instructions
Triang P42 Circuit Control Unit
Tri-ang Vintage P42 Circuit Control Unit / Untested
Tri-ang P42 Circuit Controler with High/Low Resistance - Used - Untested.
Tri-ang P42 Circuit Control Unit / Power Controller - Boxed