not exactly Dan. A meat grinder will not function as a wheat grass juicer. It is quite similar to a meat grinder/food grinder but has a slightly different make-up, particularly in the fine removable screen, but also in the pulp separator plate, if I remember correctly. Mine is in storage. Note to self... :)
I was curious about this so I followed that link. It turns out that it's just an old fashioned manual food grinder, like every household probably had before the days of the electric blender. I often see these for five dollars or less at garage sales, although finding them in complete working order with all their parts and blades and screens is much less common.