Division 3 The lean meat content of carcases shall be calculated according to the following formula:

the estimated lean meat content in the carcase (in percentage),

the thickness of muscle, measured on the mid-line of the split carcase at the shortest connection between the front (cranial) end of the musculus gluteus medius and the upper (dorsal) edge of the spinal canal (in millimetres),

the thickness of fat (including rind), measured on the mid-line of the split carcase at the thinnest location above the musculus gluteus medius (in millimetres).