| 摘要 |
PROBLEM TO BE SOLVED: To provide a visible projection line on a line during a play by providing a rod-shaped line with a fixed lateral length to be a fulcrum before the eyes. SOLUTION: The narrow rod-shaped lateral fulcrum material 2a to become a linear shape on the eye line is provided across the ends 14, or the connecting parts between lenses 16a and ear pieces 13 of eyeglasses 12a and constituted to be retainable to a prescribed position between the lens lateral width of lenses 16a, and the lateral fulcrum material is so formed as to be upward rotatably stored to improve the usability. COPYRIGHT: (C)2007,JPO&INPIT
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