Quite. I suspect the narrator might have confused grapefruit with satsuma - easy to do if you ignore size and colour ... morphology and a few other things but all citrus so all good.

Much better to stick with silly old normal and sensible measurements. This thing is roughly 0.9 linguine across - https://www.theregister.com/Design/page/reg-standards-conver...

Standards are important, that's why we have so many of them.