| 摘要 |
A balance control comprising an elongated control stick adapted to be angularly manipulated relative to a longitudinal neutral axis about a pivot point thereon, a plurality of light sensitive, electronic control devices spaced equidistant from said point in opposite directions from said axis, and means forming a light pattern having areas of different intensity and position controlled by manipulation of said stick to simultaneously change the light intensity of said light pattern on said respective electronic control devices.
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