Session 3 - Investigator

In Chapter 7, the kids find a pocket watch in the knot-hole of the tree they pass each day.
I researched a bit about the history of pocket-watches and about the names of the parts.
Pocket watches were one of the first kinds of portable time-pieces. They usually have a chain to attach it to a waistcoat, lapel, or belt loop. Sometimes they have a cover on a hinge to protect the watch. Pocket watches became common around the 17th century. The spring driven clock was invented in the 16th century. Pocket watches were first used by railroad workers, because if the trains were not on time there could be train wrecks.

For more information,
http://en.wikipedia.org/wiki/Pocket_watch

-Bailey