NPT Taper Pipe Plug Thread Gauge - 1/4"-18, 3/8"-18, 1/2"-14 Ensure Accurate Thread Testing with Standard NPT Plug Gauges Description: This NPT plug gauge is an essential tool for testing NPT (National Pipe Taper) threads, ensuring precise and accurate measurements. Available in three sizes, it helps in verifying the correct thread dimensions for various applications. Package Includes: 1 x Taper Pipe Plug Thread Gauge (Choose from the following sizes) A. NPT 1/4"-18 B. NPT 3/8"-18 C. NPT 1/2"-14 Features: Standard Tool: Designed for testing NPT threads to ensure they meet standard specifications. Three Step Marks: The plug gauge features three step marks to indicate thread size qualification. (Lower): Indicates the thread size is too small and unqualified. (Base): Indicates the thread size is standard and qualified. (Upper): Indicates the thread size is too large and unqualified. Easy to Use: Simply rotate the plug gauge into the inspected thread to determine its qualification. Why Choose This Plug Gauge: Accuracy: Provides precise measurements to ensure NPT threads meet standard specifications. Durability: Made from high-quality materials to withstand regular use. Versatile Sizes: Available in three common sizes to suit various applications. User-Friendly: Easy to use with clear step marks for quick assessment. Ensure your NPT threads are accurate and up to standard with this reliable Taper Pipe Plug Thread Gauge. Perfect for professionals and DIY enthusiasts alike.