Different Gasses Can Be Measured -- The manifold gauge set worked with most vacuum pump and filling setup. Gauges spec-ed for 89 kinds of refrigerants (22, 134a, 401a - all on the gauges), ensures accurate readings for any system.
Make Reading Easier -- The manifold gauge set LCD read out means no more bouncy gauges and guess work. This manifold has a backlit mode. You can see pressures when you are back behind some equipment.