Not just an American issue. I worked for a weighing machine company in the UK making equipment designed in Germany, the US, the UK and Italy. Having OCD I ended up buying the fabrications for spares for this zoo. Some of the drawings dated back to the 1860s and are still in use today.Some may find this nitpicking but as a chemical engineer working at an American design company (retired now) I have seen through the years many mistakes being made with gallons as most of my coworkers, especially the younger ones, automatically assume that a gallon is 3.785 liters, even if it is mentioned in a clearly British document. I therefor have always urged coworkers to be careful when reading a document, and be clear which gallons one means when writing about them.
...Assumption is the mother of all f#ck-ups.
IIRC a US probe to Mars hit the planet at very high speed due to a mph vs km/h error and the French lost an Arianne because the payload was designed in inches then converted to mm.
BOT I found out about this book two hours ago and now it's the most important publication of the year!