Here are instructions on mending the fusee chain of a lever watch. Lay the chain on a piece of wood. Place the nail of the first finger of the left hand on the last link, and insert the edge of the small blade of a pocket knife and raise the link just enough to start the rivet and show where it is. Then place the chain over a steel stake with graduated holes, and push out the rivet with a flat-ended needle held in the pin-vice. Treat both ends of the chain in this manner, making them match each other. Now file up a smooth steel pin to form a new rivet, and tap it in gently. Cut it off as close as possible to size, lay it on the wood, and file the rivet flush on both sides. Now lay the chain on a flat steel stake and gently tan the rivet on both sides with a light watch hammer. When finished, the join should not be perceptible.