| 摘要 |
A scope tube may include an elongated member, a lever, a coupling member, and a handle portion. The elongated member may define a through bore tapering from a proximal end of the elongated member toward a distal end of the elongated member. The lever may be pivotally coupled to the elongated member, and the coupling member may be pivotally coupled with the lever and may extend beyond the proximal end of the elongated member. The handle portion may be fixedly coupled with the elongated tube distal of the lever. The handle portion may be proximate the lever such that a user can grasp the handle portion with one hand and operate the lever with the thumb of the same hand. |
