| 摘要 |
PURPOSE:To make the size small and to make the directional adjustment easy, by mounting one end of the supporting shaft supporting a support so that it can be slided on the surface of the spherical seat fixed to a board. CONSTITUTION:A controller using a shaft ring 28, control ring 29, X screw 30, and Y screw 31 is fitted between a control stand 25 and a supporting shaft 21, and a control means to change mutual interval between the control stand 25 and the supporting shaft 21 by the operation rotating an X nut 31 and a Y nut 33 is provided to control the direction of indication of a reflecting plate 1 fitted to a support 2. Thus, the weight of the plate 1 and the support 2 is supported by the supporting shaft 21 and is supported to the board 3 via a spherical seat 20, allowing to avoid the weights from being exerted to a control system consisting of the controller, control stand 25 and a Z screw 26. |
