| 特點 各量規(guī)上都標有半徑螺距。 公制型螺距規(guī)、統(tǒng)一標準螺距規(guī)、惠氏螺距規(guī)三種螺距規(guī)可供選擇。   性能參數(shù) 惠氏螺距規(guī) 
| 測量范圍 | 貨號 | 組合 |  
| 4-42TPI | 188-101 | 4,41/2,5,51/2,6,7,8,9,10,11,111/2,12,13,14,15,16,18,20,22,24,26,27,28,30,32,34,36,38,40,42TPI |  
| 4-60TPI | 188-102 | 4,41/2,5,6,7,8,9,10,11,12,13,14,16,18,19,20,22,24,25,26,28,30,32,34,36,40,48,60TPI |  
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