13HPendSpring13PendSpringA
13Bob
The far left  is the top of the pendulum rod.    Notice how the pendulum spring is attached to the top piece.  You can either use a cotter pin or a 1/16" brad nail.  The center picture shows the spring hanging on the pin that is inserted into the pendulum post.  On the bottom end of the rod is the bob.  The adjustment nut regulates the speed of the timepiece.
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