When I was a child, my mother had a handy mechanical device that could be hooked to standard garden hose fittings. You turned the knob to the number of gallons you wanted to dispense and it would automatically turn off after that amount had passed through. It was useful for certain applications where the amount of water was important, but the delivery rate was not constant and/or it needed to sit in readiness for a while, but then only dispense a particular amount of water once activated.
These days everyone seems to use simple timers, whether mechanical or electronic, and I can't find such a metering device anywhere. I can find valves with no meter, and meters with no valves, but come up completely dry when I look for meters that shut the water off. I do have the skills to manufacture one myself, but that would be quite a bit of effort, and I'd rather avoid kludging it all together just to have somebody tell me that I could have just purchased one for half the price of the parts...
Does anybody still make such a contraption? Or does everyone really just use timers?
