The FLUKE-721-3610 is a dual-sensor precision pressure calibrator designed for taking simultaneous static and differential pressure measurements with a single tool. It is configured with two isolated, stainless steel pressure sensors: a low-pressure sensor with a range of -14 to 36 psi and a high-pressure sensor with a range of 0 to 1000 psi, both providing an accuracy of 0.025% of full scale. This model can also measure 4 to 20 mA signals, measure up to 30 V DC, provide a 24V internal loop power supply, and accept a Pt100 RTD input for temperature measurement. With its ability to display up to three inputs simultaneously, it is an ideal tool for gas flow calibration and custody transfer applications.