| 摘要 |
A magnifying glass for a survey is provided to efficiently magnify survey size of an object by controlling a distance between upper and lower magnifying glasses. A magnifying glass for a survey includes lower and upper magnifying glasses(10,20) and a magnifying link(40). The lower magnifying glass is connected to the upper magnifying glass and primarily magnifies an object. The upper magnifying glass secondarily magnifies the object. The magnifying link is installed at frames(30) surrounding the lower and upper magnifying glasses and connects the lower and upper magnifying glasses. The magnifying link controls a distance between the lower and upper magnifying glasses in case that one of the lower and upper magnifying glasses is rotated.
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