<p align=LEFT> <A HREF="doll1.html"><img src="fig/h7.gif" alt="doll7"></a> This automaton is closer to a watch than a robot. The escapement (the speed control system) and the spring (the power source) determines the worth of the mechanical doll. The mechanism of this automation is as follows: each pawl of both ends of the lever catches dents in the escape wheel alternately so as to control the rotation speed. The escapement of a watch is very similar to the speed control system of this mechanical doll. Its figure and motion are simple, while its concept, born in the Edo Period, reaches the forefront of technology." The doll moves back and forth on one tatami mat. It moves back and forth between a host and a guest, covering a distance of nearly 6 feet, the length of the one tatami mat.