Air Pressure GaugeLincoln Air Pressure Gauge Registers pressures up to 200 psi (13,79 bar). Dial diameter 2 in. (50,8 mm). 1 4 in. NPT center back connection. Calibrated both in psi and kg cm2. WARNING: This product can expose you to chemicals including Lead and Lead Compounds which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov. Model No. 600401 Gauge Size 2"