Artificer, I really don't know. There were a range of sizes in every time period, so it seems. The older the smaller, in general. The size probably varied according to the wealth of the purchaser, the purpose (in the home or on the march), and the popular style in the place where it was made. I don't think it was gender specific.
Some of the Scandinavian ones seemed to be items for display, so size would have been a measure of prestige.
Whenever I get a chance to look at an 18th century artifact I generally notice how skimpy it is. Thin brass, thin leather, thin steel, tiny buckles, nails, and rivets - they cut enough corners to make a roundabout. We tend to forget how precious materials were back then.