Those things are shite. When I was touring with a band. I had a gf that managed a bar. She used to book us into her bar, three days/month.
Her bar had that craptacular machine in it. She challenged me on the thing. Being a rock drummer, I did not go around intentionally putting my hands at risk. So, I had never tried it.
I’m 6’ tall, and Franklin Weight. She was 5’4” tall, and weighed a buck twenty. She grew up on a farm. Milking a cpl cows/day, for her family’s use. I tried it, and it’s not as easy as it looks, btw ( milking ). So, she was actually much stronger than she looked.
Anyway...
She fucking killed me on it. I mean KILLED me on it. Needless to say...
Clearly the fuckin thing just spits out some random number. It was hilarious, though. I was like... GTFO !
Friday night, the bar is packed. And, she KILLED me, on that piece of shit.
Yeah, I tried it. It was my first, and last time.