Vermont NPTF (Dryseal) Tapered Pipe Thread Plug Gage Assemblies These Thread Plug Gages allow you to check tapered and straight internal pipe threads. Perfect for inspecting standard pipe and pipe fittings.These Vermont Pipe Thread Plug Gages are made to precise Class X tolerances per ASME B1.20.1 and include a Certificate of Accuracy. Each Thread Plug Gage includes Handle - light blue in color. These Vermont NPTF Assemblies include an L-1 and an L-3 Plug. L-1 Basic Pug Gage Primarily checks the pitch diameter of the thread at the hand-tight length of engagement. L-3 Basic Plug Gage Checks the taper and overall thread profile at the wrench-tight length of engagement. Select Specific Thread Size from Pull Down Menu. Need Calibration? Calibration is an additional service that can be added to most thread gages. If you need calibration please send an email to sales@greatgages.com or you can find more information on how to reach us on our Contact Us page. Certificate of Accuracy All of our manufacturers include a Certificate of Accuracy with their Thread Gages off-the-shelf. These Certificates are statements that the gage has been verified to be accurate from the manufacturer, and that the manufacturer has used NIST-traceable gages to perform this verification. However, this is NOT a Certificate of Calibration. Certificate of Calibration None of our manufacturers include a Certificate of Calibration with their gages off-the-shelf. If the customer needs a Certificate of Calibration, that is a NIST-traceable document with verified readings, this is an additional Calibration Service that needs to be quoted with the gage. The standard lead time for a Calibration Service adds about 1-week to the lead time of the gage.
