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[English] |
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極限螺紋量規 (LG) M・W・U |
平行管螺紋量規 (LG) G・PF・PS |
錐管螺紋量規 (TG) R・PT |
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美制錐管螺紋量規 (TG) NPT |
美制錐管螺紋量規 (TG) NPTF |
標準螺紋量規 (SG) |
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極限圓柱量規 (PG) |
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