herringhsu 发表于 2009-2-1 17:37:09

BS 919-2-2007 Screw gauge limits and tolerances –Part 2

Screw gauge limits and tolerances –
Part 2: Specification for gauges for screw threads of Whitworth and B.A. forms

[ 本帖最后由 herringhsu 于 2009-2-1 18:29 编辑 ]
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