kinwindy

Hi Guys, Noting that the size limit for cockles(Pipis) is 35 mm How do you measure them. In the regs it says across the widest part of the shell. Does this mean length ways or across from/to the hinge? A cockle measured lengthways (end to end) at 35mm could be undersize if measured the other way (accross to hinge).Seems a bit tricky. Any ideas?Kinwindy