Fig. 6: Brian Augustus inspects antibounce device in control box. Weighted gravity sensitive lever can be seen in centre, pressure gauge on top left and a tube of silica gel crystals (to ensure there is no moisture in this watertight box) top right.

Note high pressure hoses connected to control box (they will be connected through bulkhead to compressed air bottle valve), and larger diameter hose which connects air bottle to manifold in roof channel..