Cheapest this meter place sells but they say it’s accurate:
Or a nice step up, that first link sells these also:
I had to do a ton of water metering as a bread baker, you can’t be measuring 100-1000 gallons a day efficiently by hand. In smaller batches we’d just use a postal scale and five gallon buckets or Cambro containers, but for the big mixers there’s always a digital flow meter with either a manual knob for temperature mix or it controls it for you, the nicer ones compensate for the colder earlier flow by running hotter to make the average hit the set temperature. The ones that don’t do that you just shoot a few gallons of water down the drain until it’s warm. Large bakeries also have a massive water chiller installed inline for the mixer water feeds, I could pull 38F water by the drum.
I was partial to the Baxters and Baktecs if anyone’s building their no-budget-limit grow cave!
My monster baby I miss him