DuraChoice Dry Utility Gauges are some of the best on the market. 

These Center Back Mount pressure gauges have copper alloy (brass) connections, movements and bourdon tubes. Steel cases help them withstand harsh weather conditions. Available in pressure ranges from vacuum to 6,000 PSI.

These gauges are good for measuring pressure in water, oil, gas (WOG) and diesel.
 

Dial Size:2" Dial Size (Crimped Casing)
Accuracy:+/- 4/3/4%
Scale:Dual Scale - PSI / Bar
Movement:Copper Alloy
Bourdon Tube:Copper Alloy
Window:Glass
Case:Steel case for protection in harsh environments
Connection:Copper Alloy Center Back Mount; 1/4" NPT (for 2" dial)
Normal Ambient Temp.:-30F to +140F (-34C to +60C)


Please Note: Brass components in this product contain lead, known to the State of California to cause cancer and birth defects or other reproductive harm. California law requires that this warning be given to consumers.