| 摘要 |
PURPOSE:To facilitate levelling of a work in a state to be placed on a table and to improve working efficiency, by a method wherein a rotation angle of a table shaft can be set only through control of e dial. CONSTITUTION:By varying a rotation angle of a table shaft by means of a rotation shaft sat dial situated within reach, levelling is practicable as a levelness gauge is moved and without moving a work. Thereby, since the rotation angle of the table shaft can be set only through control of a dial, levelling of the work in a state to be placed on a table can be facilitated. This constitution eliminates the need to correct placing of the work many times as in a conventional method, and enables sharp improvement of working efficiency.
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