Silverbirchtwo · Today 08:21
Mind you one of those is the US, although their imperial is slightly different from ours!
Yes, they have 16 fl oz to the pint, so a US gallon is 4/5 of a real one. They also have US Survey Feet, which are a bit short; you may have come across Decimal Inches, which are a division of USSF. The American Army Survey Corp came up with that and the USSF is shorter than a foot.
I was on a seabed survey for a pipeline between Alabama and Florida and it caused a lot of problems when we crossed map projection zones, as well as seeming being out at waypoints.
We had to get software patches, with the new units and lost working time, as a result.
Americans also don't seem to like large units, like tons. They quote millions of lb of concrete in a building, or feet of rebar. They don't say the distance to the moon in inches, though!