尺布
尺布-
一天只能织十六尺布的旧织机，渐渐被新发明的一天能织四十八尺布的单人织机代替。
Old looms which could produce sixteen feet of cloth a day were gradually followed by newly invented one-man looms which could turn out forty-eight feet in a day .
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本文介绍采用游标卞尺测量圆周均布孔组位置度误差的方法，提出用极座标法和弦长法两种方法计算其误差值或验收公差。
A measuring method using a vernier caliper to determine the error of position for evenly divided holes along a circle is introduced .