I go along with the larger machine opinion (notice handles @ it's upper area) .
Some people were injured by these things , by facing the wrong direction - clothing got caught sometimes & would bang you around a bit .
Machine rollers should be used with the rollers going 'up' the body , towards head (no loose clothing either) .
Not a pretty picture , all in all .
I'd make out a bill of sale , stating non-responsibility for any injuries caused + as-is condition (CYA) .