| 摘要 |
A tool pack comprises a board including an annular toothed portion and a rotary member. An end face of an end of the rotary member has an annular toothed portion. The end of the rotary member is engaged with the board to allow rotation of the rotary member relative to the board with the annular toothed portion of the rotary member meshing with the annular toothed portion of the board. A second end of the rotary member may be engaged with an end of a tool to rotate therewith. When the rotary member is turned, the annular toothed portion of the rotary member moves across the annular toothed portion of the board to generate clicks.
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