Hello mickb,
Also a big warm welcome from myself,
You'll find that you can't just buy one off the shelf, rather it will have to be made. I have a chap here in Adelaide that does all the major machines for the bigger bowls clubs and nothing has beaten him yet.
If you get stuck I can pass his details on to you as he also does work for interstate clubs and thus he can send one to you.
Cheers,
BB.