| 摘要 |
An aimer is provided. The aimer includes an object lens unit, a body and an eyepiece unit. The body is connected to the object lens unit. The eyepiece unit is connected to the body. The eyepiece unit includes a first pipe, a second pipe, a lens unit and a graduated pattern. The first pipe is connected to the body. The second pipe is connected to the first pipe, wherein the second pipe is rotated to move between a first position and a second position relative to the first pipe. The lens unit is disposed in the second pipe. The graduated pattern is formed on the second pipe.
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