[Illustration]
Bend up a piece of stiff wire, such as a hairpin, into the shape shown
in the lower right-hand corner of Fig. 14, with a hook at one end and a
clip at the other, the latter adjusted to grip a coin tightly. By
hanging a fairly heavy finger-ring upon the hook as a counter-weight,
the whole may be balanced with the penny upon the point of a needle, and
made to revolve on it.