| 摘要 |
The holder for the reference projected light detector of the present invention comprises a mounting assembly for mounting the reference projected light detector and a fixing assembly for fixing the detector on a staff member, wherein said fixed assembly comprises a clamp knob with a tip thereof being adjustable in association with a width of the staff member and a clamper rotatably provided and facing to the clamp knob, and said staff member is squeezed between said clamp knob and said clamper by rotation of said clamper. By adjusting the clamp knob, it is adapted to thickness of the squeezed staff member, and by further turning the camper, the tip of the locking portion is rotated, and the distance between the tip of the locking portion and the clamp knob can be varied as the result of rotation of the locking portion, and the holder for reference projected light detector can be clamped on the staff member or clamping can be released.
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