| 摘要 |
A die is configured in a hollow spherical configuration which is composed of two interlocked but separable hemisphere sections, and set within the hollow sphere is a hollow orientation piece having apertures within its wall and a selection member such as a ball freely movably therein. upon rolling the sphere, the selection member will randomly fall into one of the selected apertures in the internal orientation member which will thereupon cause a given portion of the surface of the sphere located 180 degrees from the selected aperture to face upwardly. If various numbers are inscribed upon the surface of the sphere, the sphere can be used as a die, with the drawn number being located at the position on the surface of the sphere opposite to the aperture of the internal orientation member into which the selection member fell.
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