What do you use for dually air pressure gauge and inflator

T3Pair
Get yourself a tire monitoring system, a sending unit screws on to each valve stem, Monitor on the dash shows pressure and temp. at each tire at all time. I have an extra booster that gives me all the same information on the tires on my boat trailer (triple axle) works great, an alarm goes off is one starts going low or temp starts getting high (wheel bearing failure). Cost in Canada for a good setup is around $500.00