The RAAF had a Celestial “Navigation” Trainer A63-1, at East Sale in a narrow circular two storey building.

I assume this was based on AM “Bomb Training” designs? the Friends of the RAAF Museum magazine had an excellent article on it with photos and a technical cutaway from a manual, I am sure JDK could lay his hands on a copy to scan in a couple of pics>

regards

Mark Pilkington