As most of you probably already know, the TSA has recently announced that, beginning April 25th, they're going to start allowing small knives on planes. Two of the requirements are that the blades be no more than 6 cm. long and half an inch wide. I've always liked Opinels, and figured this would be a good excuse to try out some of the smaller sizes, but I'm not sure if the blades meet the half inch or less requirement. Anybody here own these two knives and a ruler? 