In commercial pork grading practice, a government inspector inserts an
approved grading probe into a designated spot on the back of a suspen
ded carcass that is moving on an overhead conveyor in an abattoir. The
spot is at 7 cm from the split edge of the carcass, in the intercosta
l area between the last third and the fourth ribs. The probe is insert
ed once on every carcass, at the rate of 800 carcasses/hour, in a medi
um sized abattoir. The work presented herein, describes an attempt to
automate this labor intensive process.