Add fine adjust device for the pressure of foot, without dial on the adjustable screw, more convenience for operation.
压脚压力采用微调装置，压力调节螺钉设有刻度，更加方便操作。
The dials I screw on the metal encasing ring, so no dial feet, as offered by the industry.
我的拨号包裹的金属环拧上，所以没有拨号脚，所提供的行业。
Rail positioning: USES the lead screw linear guide center positioning, dial scale regulation and positioning is fast, accurate and convenient.
轨道定位：采用丝杠直线导轨中心定位，刻度盘调节定位快速，准确，方便。
Rail positioning: USES the lead screw linear guide center positioning, dial scale regulation and positioning is fast, accurate and convenient.
轨道定位：采用丝杠直线导轨中心定位，刻度盘调节定位快速，准确，方便。
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