When I worked there we had to check parts for a air conditioning unit for vehicle's such as Mercedes. If the part we found was bad we told our boss. Also, had to put a reject tag on it and wrote in brief description what was wrong, the date, and our initials. Now if the part was good we made a green mark on it and put a ok sticker on it with our initials on it showing that it's ok to be put on the line. Sometimes things were a little bit more than just looking at a part we had to either clip or shave something off of it to fit in our gage right so it fit into the unit correctly.