Adjustable bean cracker from a grape crusher

When I was in Italy, I saw the following in a chocolate-maker's workshop:

It's a motorized grape crusher. The chocolate maker puts his beans warm from the roaster into the hopper and presses a button. The crushed beans are collected in a tub below.

One very important aspect of this crusher is that the gap between the rollers is adjustable.

Manual versions of these are available for under $300 with motorized versions going for under $7-800.