Every year we get together and have a hottest hot tub competition. This is where we have tampered with our hot tubs allowing them to get way hotter than recommended on the label. Mine was so hot I made a stew in it. Anyway we all have a device called a hot tub thermometer that helps us decide the winner of the competition. The winner gets a full sized poster of yoda and a beer.

The doctor used a low-cost disposable flow meter to measure the flow rate of the fluid he was measuring. The disposable flow meter had to be low-cost, otherwise disposing of it would not be very wise. Any disposable flow meter would have to be low-cost, or people would not want to dispose of them. Not disposing of a contaminated disposable flow meter could mean cross-contamination between people or food. Of course the doctor I went to knew how to properly dispose of a disposable flow meter.