Not laughing here. My mother had one of those. I can't recall if she used it but maybe she did because I recall her meatballs were of uniform size.
At the risk of sounding dogmatic, I think that is the right size for an Italian meatball destined for tomato sauce and spagetti/linguini.
Some of the pizza takeouts around here give two meatballs with an order and they're a good bit bigger. I find that size a little disconcerting. Eh, lets be honest: it's very disconcerting. What are they thinking? I think they're being lazy because they don't want to make them the right size and provide three or four.
Meatballs for beef strouganoof and Sweedish meatballs are of course much smaller.