4" Gauges °F and °C

For reliable performance and durability, these 4" gauges are housed in a red or blue steel case with front recalibrator screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutterless™ technology with brass surge protector (to minimize needle pulsation), brass gauge movement and copper alloy bourdon tube combine for improved accuracy Color-coded for four refrigerant types: R-22, R-134a, R-404A, and R-410A 1/8" NPT Male connection Calibrated to 1% accuracy at the plant

*Features retard protection to 500 psi

UPC# Description     R-22, 134a, 404A, 410A - Refrigerants   49185   0-500 psi, 4" °F, red pressure   49186*   30"-0-120 psi, 4" °F, blue compound     R-22, 134a, 404A, 407C - Refrigerants   49183   bar and psi, 4" °C, red pressure   49184   bar and psi, 4" °C, blue compound