div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: · TAPER PIPE THREAD GAGES METHOD OF GAGING PRODUCT - NPT Internal Taper Pipe Threads: The plug gage is screwed up tight by hand into the internal thread of the product The thread src=https:reader036vdocumentsmxreader036viewer20220624155fbd1c42684f9862666fbeedhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv