1. This is a 10-yard long chain that has poles on each end. This chain is used to measure how far the offensive team needs to go in order to get a first down. The chain crew handles the chain. If a referee cannot determine if a team has reached a first down, they will ask the chain crew to come onto the field with the chain to help measure the distance to the first down marker.
1. Thomas dives over the line, stretches and attempts to get the first down. The referee gives the team an honest placement on the field and will use the chains to see if they reached a first down.
Sport The Term Is Used
Also Known As:
2. The chains
3. The sticks