The JBO Thread Ring Gauge (Go/NoGo) for NPT Right-Hand threads in 3/8 x 18 is a precision inspection tool designed to verify threaded pipe connections quickly and accurately. It helps engineers, plumbers, machinists, and maintenance teams confirm that fittings will thread smoothly and seal reliably before installation.

• Go/No-Go design for fast verification: Instantly determine conforming vs non-conforming threads, reducing guesswork and rework in the field or on the shop floor.
• Exact NPT 3/8 x 18 right-hand sizing: Tests the precise thread size and direction used by most plumbing fittings, ensuring accurate fit and reliable sealing.
• Ergonomic ring with knurled edge: Easy to grip and align in tight spaces, supporting quick, repeatable checks during busy jobs.

The JBO Thread Ring Gauge helps you standardize thread verification, speeds up assembly and maintenance tasks, and delivers consistent results across jobs. Use it for incoming inspections, on-site repairs, or routine maintenance to ensure every NPT connection meets both fit and seal expectations with confidence.