The proven identification for transit grading of pigs. A breeder is allotted a combination of letters and figures as his identification. One slap on the shoulder of the live pig is all that is required to give a legible, permanently tattooed mark on the carcass. The machine has two rotary wheels each fitted with five figures. Usually 1-5 on each. Alternative 1-5 on one rotor and 6-0 on other can be supplied. Interchangeable stationary digits (letters or figures) to give various combinations, are fitted into the slot, one on each side of machine. This tattoo is made of aluminium, is light, easily handled and strongly constructed. It is used in conjunction with rubber inking pad illustrated. Not suitable for permanent recording of live pigs