It would be helpful to standardise the system of measurement.

The international standard is Metric, so Litres, not Gallons/Ounces etc would make the most sense. Same goes for thermometers metric Celsius is more appropriate. Using older Imperial/US sizes can only lead to confusion & mistakes particularly when the US short measure gallon is significantly smaller than an Imperial gallon.

Measuring cylinders and jugs should all have dual scales because some developers etc are still sold in US measure, while most are metric.

Also a note that Developing tanks and reels should be bought as sets, they aren't often interchangeable between makes/types.