Nozzle Nut Photography Apparatus Shots

[GA_Dave]

It reminds me of the waterways on the older ALF Waterchiefs, mounted to the side of the ladder and not underneath.  I cannot recall many modern ones like this one, maybe it was done "custom" so the ladder could cradle lower to meet a height restriction.  Just guessing. 

Is it possible that this was a modification after the apparatus was originally built?