| 摘要 |
A rotary cutting tool comprising a cutter holder movable on a rotary body to hold a cutter parallel to, or at an angle to the axis of rotation including micrometer adjustment means for moving the cutter and cutter holder within precise limits, spacer blocks, parallel faced or tapered for interposition between the adjustment means and the cutter holder to increase the limit of cutter adjustment, the blocks being calibrated in correlation with the micrometer adjustment, the cutter being adjustable and secure-able to positions parallel to or at an angle to the axis of rotation independently of the adjustment means.
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