Amazon.com: 0580495/580495 HEA Spraying Pressure Gauge Assembly with T Piece Fit for Titan/Wagner Airless Sprayer up to 4000PSI, 1/4" NPT Fittings : Tools & Home Improvement
Cole-Parmer Digital Pressure Gauge, 0 to 1 psi, 1/8 - +/-0.25% full-scale from Cole-Parmer