All of the measuring cups that are in my kitchen came marked with metric and English.
The thing I liked about metric was that 1 cc of water weighs 1 gram and is 1 milliliter. That makes it really easy to calibrate graduated cylinders, pipettes, syringes, etc. using a balance.
It also make calculating solution percentages easier.
It's funny I use metric for some things and English for others without any problems. I just hate converting between them and Fahrenheit is just stupid.
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