umm was the vti a european model ?..........If so the way they measure fluids (or the way we do) could be to blame.......or maybe it's just a damn typo..who knows but heres a little something I found online....
There are a variety of U.S. Customary, British Imperial and metric (SI) units for volume. Why is metric the best choice? Consider:
The U.S. has two definitions of the pint and quart called the dry and wet measures. Each has a different size, something most Americans probably don't even realize.
The U.S. system has an ounce which refers to a fluid volume, but also an ounce that refers to mass; these are not interchangeable. In general, an ounce of liquid does not weigh an ounce!
The British Imperial system of liquid and dry measure uses only one ounce, pint and quart, but these differ from any of the U.S. measures as does the British Imperial gallon, peck and bushel.
...then again I probably don't know what the hell I am talking about and am just posting because I am bored as hell on my day off......Who knows......
ooh well.