It is important to this story to understand how things were measured on the Two Cents Plains because all the weights were based on rocks. The smallest unit was a tiny particle of sand, called a granule.
Eight granules made a grain, 1024 grains made a pebble, 1024 pebbles made a rock, and 1024 rocks made a boulder. Essentially a boulder was a gigagrain.
This generally made granules functionally useless for most measurements, but they were meaningful in some of the more exotic spice markets. And in though rarely used, there was even a measure called a milligranule, a thousandth of a granule, though only the royal scale of Zuckerberg was sensitive enough to detect one.
Another measurement of import in this story is a unit of livestock. For on the plains, a herd of 16 cows is known as a drive. What? You’ve never heard of a cattle drive?