| 摘要 |
A level mechanism, and a method of utilization thereof, are disclosed that provide for completely accurate angular placement of workpieces in operative association with the machine tool in a simple manner, even if the machine tool work surface is not itself level. A frame is provided having an elongated straight edge portion, a spirit level tube, a first annular member having first indicia formed thereon, and a second annular member having second indicia formed thereon. Actuators are associated with each of the annular members. A mounting mechanism is provided for mounting the level tube with respect to the annular members, and for mounting the annular members with respect to the frame, so that both annular members are rotatable about a common axis perpendicular to the frame straight edge, and the level tube and the second annular member rotate with the first annular member when it is rotated, and rotate with each other but not the first annular member when the actuator for the first annular member is rotated.
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