I bought one the other, model 013. It is a ground driven fertilizer/seed spreader. It has an arc on it with an arm you can move from settings 1 through 10 on it. It didn't come with instructions and I am hoping someone has one and can tell me what the instruction book says those settings mean, hopefully in terms of pounds per acre. Otherwise, I guess I will have to buy some sand and investigate!! Anybody got one or know where I can acquire a manual for it?