I use several... A Milton dial type guage on an 18 inch hose and also a Milton inflator/guage type on a hose.The guage I keep in the dually is a Dill brand truck service type with a dual foot and a calibration screw on the end.All these are top quality and used by commercial tire men on a daily basis.
Check out your local tire equipment supply company for the these precision instruments and other tire related equipment... Kid in a candy store effect.
Hvyhauler
2006 Dodge 3500 CTD LB 4x4 QC DRW
2007 Mountaineer 336 RLT
2000 Lance 1130
2 Camping Collies