Outer Scale (Fig. 6) - This scale is a micrometer-type scale marked 0-9 at the tapered base of the red handwheel.
外刻度（图6）-这个刻度是测微计类型刻度，在红手轮的锥形底座上标注0 - 9。
Outer Scale (Fig. 6) - This scale is a micrometer-type scale marked 0-9 at the tapered base of the red handwheel.
外刻度（图6）-这个刻度是测微计类型刻度，在红手轮的锥形底座上标注0 - 9。
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