I don't know what they teach in Canada, but here in the U.S. we use fractions of an inch, not decimals. Yes, inches can be broken down into hundreths or thousands, but like SchulzeA pointed out, how do you find that on a tape measure? Sure, micrometers and calipers use decimals to measure, but are you really gonna measure the height of a vinyl letter on a car door with a micrometer? Does it need to be measured within a hundredth of an inch?
Anyway IKR, I stopped at the shop and measured the height of the SV vinyl sticker, and it was
2-11/16", or 6.8262 cm. I hope this helps you!