Articulated spanner for the impossible location

I have struggled at times due to either poor planning or restrictions on access to mount accessories to reach nuts and bolts, and came across this offering. Its certainly a robust device, quite a bit of weight to it and the ratchet pivots are clean and dont appear to move - however I am yet to actually use it in anger. It certainly would have been of benefit when trying to access exhaust pipe bolts in the dirt on the Madigan trip.Attachment 89201