How far apart are the pins on a European (type C) plug?

I’m going to Switzerland and Italy and I have a converter but I’m not sure it’s right. I know those two countries have their own outlets, but it looks as though they’ll both work with C. This one has 2 pins, each 4mm apart and about 17 mm (5/8 in) apart at the tip (measuring from the center of each pin). Anyone have a type c plug that they’d be willing to measure?