There are a couple of practical aspects to a commanded standard of weights and measures. First, though, we should notice that God does not command what those measures should be. Only that they should be the same—so the Israelites could have gone Metric if they chose, as long as they were standardized.
As to the whole part about cutting off a woman’s hand for grabbing the genitals of a man her husband is fighting with? I’m thinking that’s mainly a warning to just stay out of fights. Perhaps an application is that one may not use ‘any means’ to end a fight that is not fatal. But I’m staying out of that too much…