Fluke 718 combines pressure generation, pressure and mA measurements, and transmitter and switch checks in one portable tool. The manual pneumatic pump generates pressure or vacuum, with fine adjustment and a bleed valve for setting calibration points. The 1G, 30G, 100G and 300G models serve different ranges. The 1G version uses a low-volume pump for low-pressure work. A 24 V loop supply and pressure switch test support calibration tasks. The internal pneumatic system is intended for dry non-corrosive gas; keep liquids out. Optional 750P pressure modules are selected separately.