Check the listing for details. 3/4-14 NPTF DRYSEAL THREADED PLUG GAUGE. Condition: Used. Listed at 35.00 USD. The 3/4-14 NPTF Dryseal Threaded Plug Gauge is a precision tool used for measuring and ensuring proper thread sizes in metalworking applications. This gauge is specifically designed for 3/4-14 NPTF threads, providing accurate and reliable results. It is a valuable asset for professionals in the CNC, metalworking, and manufacturing industries, ensuring high-quality craftsmanship and efficient operations.