Fin Sizing

[sailingjoe]

Recently I came in possession of a Bic stock fin with a tuttle base. It has 33 CM incorporated in the paint on it's surface. I measured the fin. It is 33 cm in span from the bottom of the base to the tip. Every other fin I own (a number of makes, sizes and bases) is measured from the top of the base to the tip. What gives here?

[isobras]

Every one of my fins is measured from tip to hull (the bottom of the base). What's inside the board is moot.

[sailingjoe]

I know. I find this rather odd. It just shows you how much the right hand doesn't know what the left is doing in a big company like Bic.