游標卡尺測量直徑(大勁)
螺絲分厘卡測量節徑
螺文節距規(牙規)測量螺距
https://www.youtube.com/watch?v=RKHL54_a9E8
28. 螺絲分厘卡是測量螺紋的何處? (A)節徑 (B)外徑 (C)螺距 (D..-阿摩線上測驗