The Oscillating Puzzle clock, as purchased, comes in two
layers of packaging. The outer layer has lots of pictures
and a full description. The inner layer is very plain brown
cardboard and is sturdy enough to ship through the mail.
Full instructions for assembling and mounting the clock are
between the two layers.
Inside the box, nestled in styrofoam pellets, are several
pieces. The all snap together with ease, in a manner
which is fairly obvious without instructions. These pieces
are the frame, the face (which is a photovoltaic panel
background, with white digits), the hands (also white), a
removable clear cover, an electric circuit and motor, a
clock escapement mechanism (with a transparent case, so
it's action can be see when the clock is off the wall), and a
bracket. The bracket has a square shaft, which slides into
a matching hole in the escapement.
The PV panel charges the circuit, which turns the motor,
which winds one end of a spring which is within the clock
escapement mechanism. The mechanism applies
alternating clockwise and counterclockwise torque to the
square hole, as well as moving the hands on the front of
the clock.
To the naive, one might expect the bracket to attach to
the top of a pendulum, and the body of the clock to be
attached to the wall. When you ship the clock to your
unsuspecting friend, he will no doubt call you on your
phone to complain that the hanging pendulum is missing.
"Don't worry, I'll come over and fix it," you say.
You move the hands to the correct time, and put the clear
cover in place.
Then, you attach the bracket firmly to the wall of your
friend's home, and slide the clock over the square shaft of
the bracket.
Finally, you give the body of the clock a slight clockwise or
counterclockwise push, which sets it in motion, so that the
entire clock thereafter rotates in an oscillating manner.
"Ta da!"