You can get used Yokogawa AXF water meters pretty cheap on eBay. They’ll put out a 4-20mA signal and as long as you get the right version for your local power you can just wire a cord to it and plug it into the wall. Only measure flow and I think temperature though.

I’m a no because I’d never pay that much for a phone game no matter what it is, although I’ve seen people spend way more money than that on IAP in “free” games.

Nope.

Came here to say the exact same thing lol

That’s a network rack, and the bolts are a standard size. I’m at work so can’t check at the moment but I can get back to you later.

Edit: These ones fit mine:
Monoprice 12/24 Screw for Rack, 50 -Piece, Black 108622 https://a.co/d/giNM2Dm