I found the Neta Sprinker Head at the local tip shop ( the Green Shed) and purchased it with a myriad of other recyclables for a job lot for $10.
I went to the irrigation aisle at the local Bunnings and after a discussion with a stall member I purchased a Rainbird Sprinkler Stand and a double threaded extension tube. Hey presto an industrial scale sprinkler which water the whole backyard an a sloping block.
Thanks Bunnings
