| 1. | Technical specification for whitworth threads taps 惠氏螺纹丝锥.技术条件
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| 2. | Thread rolling cylindrical dies for whitworth threads 惠氏螺纹滚丝轮
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| 3. | Manufacturing tolerances on the threaded portion for whitworth threads taps 惠氏螺纹丝锥.螺纹公差
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| 4. | Thread rolling flat dies for whitworth threads 惠氏螺纹搓丝板
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| 5. | Circular screwing dies for whitworth threads 惠氏螺纹圆板牙
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| 6. | British standard whitworth thread b . s . w 英制惠氏标准螺纹
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| 7. | Nut taps for whitworth threads 惠氏螺纹螺母丝锥
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| 8. | Taps for whitworth threads 惠氏螺纹丝锥
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