What sprayer is this?

I bought this cheap from my neighbor. He bought it and modified it to spray his orchard. It was not the best orchard sprayer, so he bought an orchard sprayer, and left it for a few years, forgetting how it was set up.

I need it to spray my hay fields.

I know he used an upright piece of angle for a different project.

 

I am looking for a manual. I also need some close up pics of how it was assembled.

Once I get the steel pieces put together, I will need some help with piping and nozzles. I want it put together first.

Thanks

 

 

 

 

 

 

What sprayer is this?