Gerry's post has the footprint within.
I just picked one of these up last weekend and I like it.
It's made of wood with an engine size can motor to turn the "blade".
The smoke unit is also engine size and produces plenty of smoke.
The belt from the motor to the blade shaft was too loose. Age I guess.
You cannot adjust the distance between the motor and the blade without some tweaking which would have been a pain. Everything is glued in place.
So I simply used an appropriate size rubber band which is functioning well.
I believe this came out in 2006.