API螺紋高度測量儀,分為外螺紋、內螺紋、偏梯形螺紋高度測量儀,主要用于對API專有螺紋齒高的測量,使用前需要用齒高標準塊校對,標準塊需要單獨購買。
API
Thread Height Gages, Such as External、 Internal、Buttress-Casing Thread Height Gages, Measure the API thread height,
need be preset with the Height Stardards. Sold separately from the gages