Expand description
Units of physical mass.
Each unit is defined relative to grams with a conversion factor. They can be used to conveniently create Mass quantities.
Example
use mag::mass::{g, kg};
let a = 1.2 * kg;
let b = 5 * g;
assert_eq!(a.to_string(), "1.2 kg");
assert_eq!(b.to_string(), "5 g");