| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide highly convenient allochroic clock teaching equipment suitable for teaching how to read a clock, and to provide an allochroic clock teaching equipment set composed of the allochroic clock teaching equipment and a water adhesion tool. Ž<P>SOLUTION: Allochroic clock teaching equipment 1 including a porous layer 4 in which a pigment of a low refractive index is stuck to a binder resin in a dispersion state, and which is opaque when water is not absorbed, and becomes transparent when water is absorbed is provided in a picture 3 of a dial plate of a clock formed on a supporting body 2. An allochroic clock teaching equipment set composed of the allochroic clock teaching equipment and a water adhesion tool are provided. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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