PAKO is German machinery on which we pair nozzle body with required needle class, so that we can adjust the required clearance. Our project on PAKO is related to the improvement in clearance to increase the Matching rate. It is found that, in today’s condition Matching rate is about 60-65% and our aim is to improve it. We have to find out factors affecting matching rate as per their priority of impact and find out ways of improvement of Matching rate. So by taking no. of readings on different benches /machines with one as group of sample parts. We compare it with another readings and we find changes while pairing.