https://www.kartek.com/parts/marshall-kar00400d-dry-mechanical-pressure-gauge-0-400-psi-18-npt-pipe-thread-male-fitting.html
Marshall KAR00400D Dry Mechanical Pressure Gauge 0-400 PSI 1/8" NPT Pipe Thread Male Fitting -...
Marshall KAR00400D Dry Mechanical Pressure Gauge 0-400 PSI 1/8" NPT Pipe Thread Male Fitting for offroad racing in the King of the Hammers, New Zealand Taupo...