| 摘要 |
A spherically mounted reflector for measuring direction and/or distance, characterized by the fact that a retroreflecting triple prism (17) is inserted into the target sphere (10), and the base (18) of this prism cuts away part of the surface (11) of the target sphere. The height of the prism is approximately equal to the radius of the target sphere (10), and the centre (16) of the target sphere (10) is located on the height line (19) of the triple prism (17).
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